RRB NTPC CBT 2 2017: సమాధానాలతో ప్రశ్నలు

Let the numbers of notes be x, 3x and 5x. Value = 10x + 60x + 250x = 320x = 1920, so x = 6. Rs 20 notes = 3 × 6 = 18.

95/200 × 100 = 47.5%.

Florence Nightingale, founder of modern nursing, was called 'The Lady with the Lamp' because she made night rounds among wounded soldiers during the Crimean War.

Rusting forms a new substance, hydrated iron(III) oxide, from iron, oxygen and water, and cannot be reversed by physical means – it is a chemical change.

d/45 − d/60 = 5 minutes = 1/12 hour. d(4 − 3)/180 = 1/12, so d = 15 km.

Under Article 71, all doubts and disputes about the election of the President are inquired into and decided by the Supreme Court, whose decision is final.

For 2.6, 1.3, X in continued proportion, 2.6 : 1.3 = 1.3 : X. So X = 1.3 × 1.3/2.6 = 0.65.

The Indus Waters Treaty was signed in Karachi on 19 September 1960 by Jawaharlal Nehru and Ayub Khan, brokered by the World Bank.

One picture needs 4 × 8 = 32 hours, so 7 pictures need 224 hours. At 6 hours a day: 224/6 = 37 1/3 days.

Increased use of e-books shows that electronic reading is gaining popularity, so II follows. 'Nobody reads books' is an extreme claim not supported by the statements.

Each term is double the previous plus 1: 2→5→11→23→47→95.

In January 2017 the 11.2 km Pir Panjal tunnel (Banihal–Qazigund, J&K), opened in 2013, was India's longest railway tunnel. It was later overtaken by the 12.8 km tunnel T-49 on the Udhampur–Srinagar–Baramulla line (opened 2024).

Geetha < Bindu < Rama < Vimala < Meenu. Geetha is the shortest.

The Red Data Book (IUCN Red List) records rare, threatened and endangered species of plants and animals.

After 2 years the amount is 10000(1 + r/100)² = 11664, so (1 + r/100)² = 1.1664 = 1.08². Hence r = 8%.

The smallest five-digit number is 10000 and the greatest four-digit number is 9999. Difference = 1.

The CSIR-National Geophysical Research Institute (NGRI), set up in 1961, is in Hyderabad.

In 1992 Sachin Tendulkar became Yorkshire's first overseas player.

Jute (fibre), rubber (latex) and teak (timber) come from plants. Honey is made by bees from nectar, so it is an animal product.

By mass, the Earth's crust is about 46% oxygen and 28% silicon, so silicon is the second most abundant element.

They ring together after LCM(16, 24, 36, 42) minutes. 16 = 2⁴, 24 = 2³ × 3, 36 = 2² × 3², 42 = 2 × 3 × 7, so LCM = 2⁴ × 3² × 7 = 1008 minutes.

4 : 22 = x : 33, so x = 4 × 33/22 = 6.

Halley's Comet returns about every 75–76 years. It last appeared in 1986 and is expected again in 2061.

Nico Rosberg (Mercedes) won the 2016 Australian Grand Prix in Melbourne and went on to win that year's world championship.

Maharaja Sawai Jai Singh II built five Jantar Mantar observatories: Delhi, Jaipur, Ujjain, Mathura and Varanasi.

An author makes a book; a carpenter makes furniture.

These are Roman numerals in increasing order: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500. The next is M = 1000.

Statement II gives the office distance, not the school's. III gives travel times but no speeds. I is irrelevant. No combination gives the distance, so the data is insufficient.

One apple weighs 1.8/12 = 0.15 kg. Three boxes weigh 3 × 23.25 = 69.75 kg, which is 69.75/0.15 = 465 apples.

Replacing the symbols: 8 × 2 + 11 − 24 + 24 ÷ 6. Using BODMAS, do × and ÷ first: 16 + 11 − 24 + 4 = 7.

CP = 10 × 1245.80 = Rs 12,458. At a 15% loss, SP = 0.85 × 12458 = 10,589.3 ≈ Rs 10,589.

Ustad Ali Ahmed Hussain Khan, a Benares gharana shehnai maestro who received the Sangeet Natak Akademi award, died in 2016.

A stone is a typical example of something hard; a feather is a typical example of something soft.

Independent India's first general elections were held from October 1951 to February 1952.

General Bipin Rawat became Chief of the Army Staff on 31 December 2016, succeeding Gen. Dalbir Singh Suhag, and served until December 2019. Arup Raha (Air Force) and Sunil Lamba (Navy) headed the other services.

Total CP = 524000/0.9 = Rs 5,82,222. Per cycle: 582222/160 ≈ Rs 3,639.

Article 100 says the Speaker (or the person presiding) shall not vote in the first instance but shall have and exercise a casting vote in the case of an equality of votes.

From III the sister is 15, and from II she is 5 years older than Surya, so Surya is 10. II and III are sufficient; I adds nothing.

The Civil Disobedience Movement began on 12 March 1930 when Gandhi set out from Sabarmati Ashram on the Dandi March to break the salt law.

'=' = 4, '[' = 2, '-' = 9 and '+' = 0, so '=[-+' = 4290.

The Gandak rises in Nepal and joins the Ganga near Patna. The Beas joins the Sutlej, the Tungabhadra joins the Krishna and the Manas joins the Brahmaputra.

Misappropriating money is a serious breach of trust for an accountant. Of the allowed actions, a token Rs 5 fine or a phone warning is too weak, so dismissal is the most suitable decision.

The Diesel Locomotive Works (now Banaras Locomotive Works), set up in 1961, is in Varanasi. Chittaranjan makes electric locomotives.

The International Sand Art Festival 2015 was held at Chandrabhaga beach near Konark, Odisha, alongside the Konark Festival.

1.13 + 5.884 = 7.014, and 7.014 ÷ 2.004 = 3.5.

Phytoplankton are microscopic photosynthetic organisms; they release oxygen into water and produce about half of Earth's oxygen. E. coli, amoeba and Salmonella do not photosynthesise.

Silk production (sericulture) began in ancient China, by tradition with Empress Leizu, and the Silk Road carried silk westward.

Girls = 40% of 60 = 24. 25% of 24 = 6 cycle, so 18 girls do not come by bicycle.

SP = 2500 × 1.25 = 3125, so the profit before tax = 625. After paying Rs 125 tax, the profit = Rs 500.

Principal, teacher and student are people in a school; the school is the institution itself, so it is the odd one.

13 and 17 are prime and 12 is even. 15 = 3 × 5 is both odd and composite.

Since outdoor play improves children's health and they are not finding time for it, the most suitable step is to make outdoor play a compulsory part of the routine. Indoor games or keeping children from school do not solve the problem.

RAW, the Research and Analysis Wing, is India's external intelligence agency, set up in 1968.

Cookies are small files a website stores in the browser, so the site can recognise the user on later visits.

A battery (electrochemical cell) converts chemical energy into electrical energy. A motor turns electrical energy into mechanical energy, while a dynamo and a generator turn mechanical energy into electrical energy.

Martina Hingis and Sania Mirza won the women's doubles at the 2015 China Open in Beijing, one of their many titles that year.

Governor-General Lord William Bentinck passed the Bengal Sati Regulation (Regulation XVII) in December 1829, banning sati, with support from Raja Ram Mohan Roy.

Length = 20.5 × 7/5 = 28.7 cm.

Unsold stock = 132 − 125 = 7 dozen, valued at cost: 7 × 475 = Rs 3325.

With the changes, 10 + 3 − 6 becomes 10 − 3 × 6 = 10 − 18 = −8.

(3.2 × 10⁴)/(2 × 10⁵) = 1.6 × 10⁻¹ = 0.16 = 16/10².

A compiler translates the whole source program into object (machine) code before it is run. An interpreter translates and executes line by line.

The lower-ranked team (higher number) always wins. First round winners: 2, 4, 6, 8, 10, 12, 14, 16. Next round: 4 beats 2, 8 beats 6, 12 beats 10, 16 beats 14. The semi-finals are 4 vs 8 and 12 vs 16, so Team-12 and Team-16 can meet.

Distance = 60 × 4.5 = 270 km. 15 m/s = 15 × 18/5 = 54 km/h, so the time = 270/54 = 5 hours.

The terms alternately increase by 4 and 7: 11 (+4) 15 (+7) 22 (+4) 26 (+7) 33 (+4) 37 (+7) 44 (+4) 48.

The Great Bear (Ursa Major), which contains the Big Dipper (Saptarishi), is a constellation.

With = × − +: 24 = 8 × 4 − 10 + 2 = 32 − 10 + 2 = 24, which balances.

SEBI (Securities and Exchange Board of India), a statutory body since 1992, regulates the securities and stock markets.

The Palk Strait separates Tamil Nadu from the northern tip of Sri Lanka.

Elias Howe received a US patent in 1846 for his lockstitch sewing machine design.

Speed = 14/25 km per minute. In 18 minutes: 14 × 18/25 = 10.08 km.

The additive primary colours of light are red, green and blue (RGB); together they make white light.

Minamata disease, first seen in Minamata, Japan, in 1956, is mercury poisoning caused by eating fish contaminated with methyl mercury from industrial waste.

Composting lets microorganisms decompose wet (organic) waste into nutrient-rich manure. Incineration burns waste instead.

Time = SI × 100/(P × R) = 400 × 100/(4000 × 6) = 5/3 years = 20 months.

Half-yearly compounding: the rate per half-year is 2.5% and 2 years = 4 periods. Amount = P(1.025)⁴.

At 2 o'clock the hands are 2 × 30° = 60° apart. The reflex angle = 360° − 60° = 300°.

Awadh was the ancient kingdom of Kosala, one of the sixteen Mahajanapadas, with Ayodhya and Shravasti as its centres.

L = 12, O = 15, A = 1, N = 14, so LOAN = 12, 15, 1, 14.

A fish heart has two chambers, one atrium and one ventricle, pumping blood in a single circuit through the gills.

A Chief Minister must be (or within six months become) a member of the state legislature. The minimum age for an MLA is 25, so the CM must be at least 25.

165 = 18 × 9 + 3. Nine full boxes take 162 mangoes, so she gives away 3.

Gujarat Lions, which played in IPL 2016–17, was owned by Keshav Bansal of Intex Technologies.

Leaving an east-facing house she walks east. Left → north, right → east, right → south, left → east, right → south. She ends walking south towards the door, so the door faces north.

ETRE = TREE, OTOR = ROOT and DESE = SEED are related to plants. OHOT = HOOT (the call of an owl) is different.

K does the whole work in 6 × 4/3 = 8 days; J in 4 × 5/2 = 10 days. Together: 1/8 + 1/10 = 9/40 per day, so 40/9 = 4 4/9 days.

Product = HCF × LCM = HCF × 40·HCF = 40·HCF² = 1440. HCF² = 36, so HCF = 6.

Garrett Morgan, an African-American inventor, patented a three-position traffic signal in 1923.

Uttar Pradesh was India's largest sugarcane producer in 2015–16, ahead of Maharashtra and Karnataka.

In the Goa Opinion Poll of 16 January 1967 the people of Goa voted against merging with Maharashtra, and Goa remained a Union Territory until statehood in 1987.

$ ÷ * × @ − ! = 24 ÷ 12 × 48 − 6 = 2 × 48 − 6 = 90.

242 = 2 × 121, 363 = 3 × 121 and 484 = 4 × 121 are multiples of 121; 101 is not.

Unicode assigns a unique number (code point) to every character of every writing system, so text in any language displays correctly on any platform.

An inch is a smaller unit of length than a foot; similarly a metre is a smaller unit of length than a kilometre.

12 couples are 24 adults, and each couple has at least one child, so at least 12 children: a minimum of 36 people. The numbers of males and females cannot be fixed, because the children's genders are unknown.

The table is cumulative (number of students below each height). Students below 130 cm = 180 and below 100 cm = 12, so those between 100 and 130 cm = 180 − 12 = 168.

GPS stands for Global Positioning System, the US satellite navigation system.

SP = 25 × 33.50 = Rs 837.50. Profit = 37.50 on 800 = 4.69% ≈ 4.7%.

42,000 litres = 42 m³. Depth = 42/(6 × 3.5) = 42/21 = 2 m.

(1/a + 1/b) ÷ (1/a² − 1/b²) = [(a + b)/ab] ÷ [(b² − a²)/a²b²] = (a + b)/ab × a²b²/[(b − a)(b + a)] = ab/(b − a).

The Kailasanathar Temple at Kanchipuram was built around 700 CE by the Pallava king Rajasimha (Narasimhavarman II).

The Independence for India League, formed in 1928 by Nehru and Subhas Bose to demand complete independence, had S. Srinivasa Iyengar as its president.

In 2012, Uttar Pradesh had 143 and Rajasthan 26 lakh hectares. Difference = 117 lakh hectares.

Maharashtra: 80 + 150 + 175 = 405. Madhya Pradesh: 40 + 85 + 90 = 215. Difference = 190 lakh hectares.

Punjab went from 220 (2011) to 264 (2013): an increase of 44, and 44/220 × 100 = 20%.

Both = 40 + 29 − 55 = 14. Only science = 40 − 14 = 26.

Since every student likes at least one subject, both = 40 + 29 − 55 = 14.

Each letter of AKBAR moves 2 places forward to give CMDCT. Applying +2 to JODHA gives LQFJC.

Non-owners = 832 − 624 = 208. Probability = 208/832 = 0.25.

In September 2016 the Cabinet approved merging the Railway Budget with the General Budget from 2017–18, ending a 92-year practice. The first combined budget was presented on 1 February 2017.

By the triangle inequality the third side lies between the difference and the sum of the other two: 5.2 − 3.4 = 1.8 < x < 8.6 = 5.2 + 3.4.

First Rs 5500 at 4% for 2 years: 440. The remaining 13250 − 5500 = 7750 at 6% for 2 years: 930. Total interest = Rs 1370.

C, D and F are siblings, and E is F's father, so E is also C's father. B is C's daughter, so B is E's granddaughter.

D is the sibling of B's father C, but D's gender is not given – D could be B's paternal uncle or paternal aunt. So it cannot be determined.

Known females: A (sister), B (daughter), F (sister), G (mother) and J (C's wife) – 5. The genders of D and H are not given, so there are at least 5 females.

All dogs are cats and no cat is a rat, so no dog is a rat – II is false. 'All rats are dogs' contradicts this, so I is false too. Neither follows.

(1 − tan²θ)/tan²θ = 1/tan²θ − 1 = cot²θ − 1.

Khangchendzonga National Park in Sikkim became a UNESCO World Heritage Site in July 2016. The other options were listed earlier (Western Ghats 2012, CST 2004, Mountain Railways 1999–2008).

In a progressive tax, the rate rises as the taxable amount rises – like India's income-tax slabs. A regressive tax takes a larger share from lower incomes.

These are the vowels in reverse order: U, O, I, E, A. The missing one is I.