RRB NTPC · Question 48
Seven chocolates A, B, C, D, E, F and G are bought at different costs between Rs. 40 and Rs. 50 (excluding 40 and 50) but not necessarily in the same order. The cost of chocolate C is five less than that of chocolate E. The cost of the chocolate A is a prime number. The cost of chocolate F is two more than that of chocolate A. The cost of chocolate F is more than that of chocolate E. The cost of chocolate D is an odd number. The cost of chocolate G is three more than the cost of chocolate D. None of the chocolates costs Rs. 44. The cost of chocolate B is an even number. Which is the following chocolates is costlier than E?
Show answer & explanation
Answer: (B) G
Explanation
A is prime and F = A + 2 must also be below 50, so A = 41 or 47; A = 41 leaves no room for E, so A = 47 and F = 49. E < 49 with C = E − 5, and D odd with G = D + 3: the only fit is E = 46, C = 41, D = 45, G = 48, B = 42. Costlier than E (46): A, F and G – so G.