RRB NTPC CBT 2 2017: సమాధానాలతో ప్రశ్నలు

Total appeared = 8500 + 5600 + 7500 + 4800 + 7000 = 33,400. Total selected = 80 + 85 + 78 + 48 + 70 = 361. 361/33400 × 100 ≈ 1.08%.

Selected ÷ qualified: Maharashtra 80/950 ≈ 8.4%, Uttar Pradesh 85/620 ≈ 13.7%, Kerala 78/720 ≈ 10.8%, Delhi 48/400 = 12%. Uttar Pradesh has the highest ratio.

Qualified ÷ appeared: Maharashtra 11.2%, Kerala 9.6%, Delhi 400/4800 ≈ 8.3%, Arunachal Pradesh 9.3%. Delhi is the lowest.

Selected ÷ appeared: Maharashtra 80/8500 ≈ 0.94%, Delhi 48/4800 = 1%, Uttar Pradesh 85/5600 ≈ 1.52%, Kerala 78/7500 = 1.04%. Uttar Pradesh is the highest.

The Economic Survey 2014–15, which introduced the JAM trinity, reported about 20.8 crore Jan Dhan accounts, Aadhaar coverage of about 75.8% and mobile teledensity of about 79.78%. '50.4 crore Jan Dhan accounts' is not true.

Boundaries: 20 × 4 + 5 × 6 = 110 runs. Runs by running = 150 − 110 = 40, and 40/150 × 100 = 26.67%.

In 2015 Romanian prosecutors charged former President Ion Iliescu with crimes against humanity over the violent suppression of the 1990 protests ('Mineriad').

The boundary length of a circle is its circumference; the boundary length of a square is its perimeter.

Android, UNIX and Windows are operating systems. Scala is a programming language that runs on the Java Virtual Machine.

Overall factor = 1.10 × 0.80 × 1.50 = 1.32, i.e. a 32% increase from April to July.

West Indies beat Australia in the final in Kolkata to win the ICC Women's World Twenty20 2016, their first title.

If the third number is 100, the two numbers are 140 and 160. Ratio = 140 : 160 = 7 : 8.

The terms are n(n + 1): 1×2, 2×3, 3×4, 4×5 = 20, 5×6 = 30, 6×7 = 42, 7×8 = 56.

The only word common to both sentences is 'you', and the only code common to both is 'sen'. So 'sen' = 'you', which needs both statements together.

HCF of fractions = HCF of numerators ÷ LCM of denominators. HCF(12, 21, 9, 18) = 3 and LCM(5, 6, 4, 3) = 60, so the HCF = 3/60 = 1/20.

Let boys = 4k and girls = 5k. Four new boys are 20% of 4k, so 0.8k = 4 and k = 5. Girls = 25.

Calcium carbonate (limestone, chalk) is practically insoluble in water. Sodium chloride, lithium bromide and magnesium iodide dissolve readily.

A compiler translates a program written in a procedure-oriented high-level language into machine language. Scanners, plotters and VDUs are input/output devices.

Y's one-day work = 1/15 − 1/30 = 1/30, so Y alone takes 30 days.

Gastric juice contains hydrochloric acid, enzymes such as pepsin, mucus and salts such as potassium and sodium chloride. The stomach does not secrete sulphuric acid.

By the midpoint theorem, each side of triangle XYZ is half a side of PQR. So its perimeter is half of 24 = 12 cm.

40% simple interest in 4 years means 10% a year. CI on 6000 for 3 years at 10% = 6000 × (1.331 − 1) = Rs 1986.

In absolute greenhouse-gas emissions around 2015, India ranked behind China, the USA and the European Union (taken as one emitter), so 4th in the official key's reckoning.

Chitra's sister's husband's daughter is Chitra's niece. The niece's only maternal aunt (mother's sister) is Chitra herself. Divya is Chitra's mother-in-law, so Chitra is Divya's daughter-in-law.

In 2016 Mahindra & Mahindra became the first Indian company to join EP100, The Climate Group's campaign for companies committed to doubling their energy productivity.

Each term is double the previous plus 1: 4 → 9 → 19 → 39 → 79 → 159.

The Hubble Space Telescope, a NASA–ESA project, was launched into low Earth orbit in April 1990 aboard the Space Shuttle Discovery.

India borders Pakistan, China, Nepal, Bhutan, Bangladesh, Myanmar and Afghanistan (through PoK). Tajikistan is separated from India by Afghanistan's narrow Wakhan Corridor.

Sadhana Shivdasani, a popular Hindi film actress of the 1960s known for the 'Sadhana cut' hairstyle, died on 25 December 2015.

Blackboard, paper and slate are surfaces that are written on; chalk is the thing used to write. So chalk is different.

A compound microscope uses two convex lenses (objective and eyepiece). Car headlights and flashlights use concave reflectors, and door peepholes use concave (diverging) lenses.

In the same time t, 13t − 10t = 30 km, so t = 10 hours. The actual distance = 10 × 10 = 100 km.

The monuments of Mahabalipuram (Mamallapuram) – Shore Temple, Pancha Rathas and Arjuna's Penance – were built by the Pallavas in the 7th–8th centuries.

120 km/h = 120 × 5/18 = 100/3 m/s. Length = 100/3 × 9 = 300 m.

The second train's speed = 800/8 = 100 km/h. The first = 4/5 × 100 = 80 km/h.

'Yajus' means sacrifice or worship. The Yajur Veda is the Veda of sacrificial formulas, used by priests performing yajnas.

The dollar is the currency of the USA; the lira is the currency of Turkey. Taka (Bangladesh), kyat (Myanmar) and baht (Thailand) belong to other countries.

'Transcendence: My Spiritual Experiences with Pramukh Swamiji' (2015) was written by Dr. A.P.J. Abdul Kalam with Arun Tiwari.

Illiterate = 200 − 111 = 89, and 89/200 × 100 = 44.5%.

Article 21A, added by the 86th Amendment (2002), makes free and compulsory education for children aged 6–14 a fundamental right.

Cost per lemon = 80/10 = Rs 8. With a 25% profit the SP is Rs 10 each, so a dozen sells for Rs 120.

Rs 1500 buys 1500/75 = 20 litres, which run 20 × 25 = 500 km.

Going south 21 km and then turning right (west) 20 km forms a right angle. Distance = √(21² + 20²) = √841 = 29 km.

Profit %: 32/60 = 53.3%, 44/80 = 55%, 26/50 = 52%, 40/70 ≈ 57.1%. The last transaction is the best.

Moiz has no brother, so his mother's only daughter-in-law is his wife. Her son's maternal grandfather is Moiz's father-in-law, and his only son is Moiz's wife's brother – Moiz's brother-in-law.

Seating (going to each person's right): Rita, Aarti, Sita, Sameer, Anil, Sahil, Biswas, Priya, then back to Rita. Rita's husband Anil sits opposite her, Priya sits between Rita and her husband Biswas, and Sita is Sameer's wife. Sahil sits immediately to the right of Anil.

Sameer is third to Rita's right and Anil is immediately to Sameer's right, so Anil sits directly across from Rita. Rita's husband sits directly across, so he is Anil.

In the arrangement Rita, Aarti, Sita, Sameer, Anil, Sahil, Biswas, Priya (in order to the right), Aarti (2nd seat) and Sahil (6th seat) are four places apart – directly across the table.

Under Article 58, a presidential candidate must be an Indian citizen who has completed 35 years of age and is qualified to be a Lok Sabha member.

Reverse osmosis forces water through a semi-permeable membrane against the osmotic gradient, leaving dissolved salts and impurities behind.

The Lifeline Express, run by Impact India Foundation with Indian Railways, began its first journey on 16 July 1991.

Eco Action Day is Singapore's annual nationwide campaign encouraging people and organisations to take everyday action for the environment.

Net filling rate = 1/12.5 − 1/25 = 2/25 − 1/25 = 1/25 of the vessel per minute, so it takes 25 minutes.

GUEST: G7→9 (+2), U21→19 (−2), E5→7 (+2), S19→17 (−2), T20→22 (+2). Applying this to HOUSE: H8→10, O15→13, U21→23, S19→17, E5→7 = 10-13-23-17-7.

The Jallianwala Bagh massacre took place in Amritsar on 13 April 1919, when troops under General Dyer fired on an unarmed crowd.

Subhas Chandra Bose said 'Tum mujhe khoon do, main tumhe azadi dunga' to the Indian National Army in Burma in 1944.

SAP stands for Systems, Applications and Products in Data Processing – the German company known for its ERP software.

Swapping ÷ and + gives 56 ÷ 7 + 5 × 3 − 2 = 8 + 15 − 2 = 21, which is correct.

Horticulture Statistics at a Glance 2015 lists Jammu & Kashmir as the largest apple producer, ahead of Himachal Pradesh.

With SI at 40% a year for 3 years, the amount is P(1 + 1.2) = 2.2P = 8800, so P = Rs 4000.

Asiatic lions live in the wild only in and around the Gir forest of Gujarat.

World Environment Day has been observed on 5 June every year since 1974, marking the opening of the 1972 Stockholm Conference.

15 = 3 × 5, 25 = 5² and 125 = 5³, so LCM = 3 × 5³ = 375.

'Nivaran', launched by the Railway Ministry in 2016, is the online portal for service-related grievances of serving and retired railway employees.

P × 1.2² = 7200, so P = 7200/1.44 = Rs 5000.

Using the LCD 385: 4/11 = 140/385, 2/7 = 110/385, 3/5 = 231/385. Sum = 481/385.

The Union Budget 2016–17 allowed 100% FDI through the FIPB route in the marketing of food products produced and manufactured in India.

The mother of Arun's mother's brother is Arun's grandmother. Her only daughter is Arun's mother, and that daughter's daughter is Arun's sister.

Human blood is slightly alkaline, with a pH of about 7.35–7.45 (approximately 7.4).

UNFCCC is the United Nations Framework Convention on Climate Change, adopted at the 1992 Rio Earth Summit.

Variance is the square of the standard deviation: 6² = 36.

Positions 2, 3, 6, ?, 18, 27 (A = 27 after Z) increase by 1, 3, 5, 7, 9. So the missing letter is 6 + 5 = 11 = K.

26 students like at least one (32 − 6). Both = 20 + 14 − 26 = 8.

26 students like at least one character and 8 like both. Students who like only one of them (either Spiderman or Batman, but not both) = 26 − 8 = 18 (12 only Spiderman + 6 only Batman).

Let Chinmay get c. Binay = 1.5c and Anil = 1.5 × 1.5c + 10 = 2.25c + 10. Total 4.75c + 10 = 200 gives c = 40, so Anil = 90 + 10 = Rs 100.

'There is no such thing as a free lunch' means nothing is truly free – there is always a hidden cost (I), and you cannot get something for nothing (II). Both restate the idea.

Third-generation computers (about 1964–1971) used integrated circuits. The first used vacuum tubes, the second transistors and the fourth microprocessors.

Ants are terrestrial (land) animals; frogs are amphibians.

Tim Berners-Lee proposed the World Wide Web at CERN in 1989. Robert Kahn co-designed TCP/IP and Linus Torvalds created Linux.

Wire length = 4 × 44 = 176 cm = 2πr. r = 176 × 7/(2 × 22) = 28 cm.

Letters take reverse positions (A = 26 … Z = 1): B = 25, and BEST = 25 + 22 + 8 + 7 = 62. STABLE = 8 + 7 + 26 + 25 + 15 + 22 = 103.

Apollo 11 landed Neil Armstrong and Buzz Aldrin on the Moon on 20 July 1969. Lunokhod 1 was a Soviet rover and Viking 1 went to Mars.

Replacing the letters: 26 × 74 ÷ 4 − 5 + 2 = 1924 ÷ 4 − 5 + 2 = 481 − 3 = 478.

Let the numbers be 4k, 3k and 6k. Value = 0.5 × 4k + 1 × 3k + 2 × 6k = 17k = 221, so k = 13. 50-paise coins = 4 × 13 = 52.

In April 2016 former badminton champion Nandu Natekar became the first non-cricketer inducted into the Cricket Club of India's Legends Club.

Those who exercise regularly are health-conscious, and Meena exercises daily, so she is health-conscious – I follows. Nothing is said about her family, so II does not follow.

Replacing the signs: 18 × 12 ÷ 4 + 5 − 6 = 216 ÷ 4 + 5 − 6 = 54 − 1 = 53.

'Playing It My Way' (2014) is Sachin Tendulkar's autobiography.

First letters go A, B, C, D, E, F; second letters D, F, H, J, L, N (+2); third letters M, L, K, J, I, H (−1). The missing term is DJJ.

Telangana was formed on 2 June 2014 from Andhra Pradesh. Jharkhand, Uttarakhand and Chhattisgarh were created in 2000.

All spears are arrows and all arrows are bullets, so all spears are bullets. Hence some bullets are arrows (1), some arrows are spears (2) and some bullets are spears (3). 'No bullet is an arrow' (4) is false. Conclusions 1, 2 and 3 follow.

First letters advance by 2 (C, E, G, I, K, M) and second letters go back by 2 (X, V, T, R, P, N). The missing term is IR.

3225^1632 ends in 5 and 2224^1632 is even. An even number times a number ending in 5 ends in 0, so the unit digit is 0.

Gain = 1500 − 1235 = 265. Gain % = 265/1235 × 100 ≈ 21.46%.

Anandamath (1882), set during the Sannyasi Rebellion and containing 'Vande Mataram', was written by Bankim Chandra Chattopadhyay.

All blacks are white, so some whites are black (1 follows). Some reds are black and those blacks are white, so some whites are red (4 follows). Conclusions 2 and 3 do not follow. Only 1 and 4 follow.

OPTTAO rearranges to POTATO, a vegetable.

Odissi is the classical dance of Odisha; Kathakali is the classical dance of Kerala.

X does 1/30 a day; Y and Z together do 1/45 + 1/90 = 1/30. In every 2 days X works twice and Y + Z once: 3/30 = 1/10 of the work. The whole work takes 20 days.

0.275 + 0.569 = 0.844, and 0.844 − 0.336 = 0.508.

Rani ki Vav, Chhatrapati Shivaji Terminus and the Bhimbetka rock shelters are UNESCO World Heritage Sites. The Bada Imambara in Lucknow is not.

P = VI, so I = P/V = 60/240 = 0.25 A.

The IRCTC cleanliness survey published in May 2016 ranked Surat the cleanest A1-category railway station in India.

Half-yearly compounding at 20% a year means 10% per half-year for 2 periods: 2000 × 1.1² = Rs 2420.

The Bharat Ratna announced in December 2014 was presented in March 2015 to Atal Bihari Vajpayee and, posthumously, Pandit Madan Mohan Malaviya.

345678 × 999999 = 345678 × (1,000,000 − 1) = 345,678,000,000 − 345,678 = 345,677,654,322.

LCM(12, 15, 20, 54) = 540. The largest multiple of 540 below 10,000 is 540 × 18 = 9720.

Each letter of PLANT moves 3 places forward to give SODQW. Applying +3 to MOUNTAIN gives PRXQWDLQ.

CP of 18 pens = SP of 12 pens, so SP/CP = 18/12 = 1.5. Gain = 50%.

The epidermis is the outermost layer of the skin. The hypodermis lies beneath the dermis, and the sclera is the white of the eye.

Anamudi (2,695 m) in Kerala's Western Ghats is the highest peak in South India. Doddabetta is highest in the Nilgiris and Mullayanagiri in Karnataka.

As decimals: 24/29 ≈ 0.83, 7/9 ≈ 0.78, 5/13 ≈ 0.38 and 11/47 ≈ 0.23. Descending: 24/29, 7/9, 5/13, 11/47.

Sorted: 12, 13, 22, 31, 36, 43, 43, 53, 53, 54, 66, 67, 77, 90, 97, 98. With 16 values the median is the mean of the 8th and 9th values: (53 + 53)/2 = 53.

Dipika Pallikal and Joshna Chinappa won the women's doubles at the 2014 Glasgow Commonwealth Games – India's first-ever Commonwealth Games gold in squash.

The minimum comes from connecting all four in parallel: 1/R = 4 × 1/5, so R = 5/4 = 1.25 Ω.

Statement II is just Statement I multiplied by 3, so together they give only one equation in two unknowns. x cannot be found even with both.

Parimarjan Negi became a Grandmaster in 2006 at 13 years, 4 months and 22 days, then India's youngest. Younger Indian GMs such as Praggnanandhaa and Gukesh came later.

The National Emblem is adapted from the Lion Capital of Ashoka at Sarnath, erected by Emperor Ashoka in about 250 BCE.

British physiologist Robert G. Edwards won the 2010 Nobel Prize in Physiology or Medicine for developing in-vitro fertilisation. Louise Brown was the first IVF baby (1978).

Article 81 allows up to 530 members from the states and not more than 20 from the Union Territories.