quantitative aptitude

Direction: Find out the missing number in the following number series. Q) 1890, 756, 252, 72, 18, ? A.            9 B.            6 C.            4 D.            2 E.            5 Sol: 1890/2.5 = 756 756/3 = 252 252/3.5 = 72 72/4 = 18 18/4.5 = 4

1256, 1247, 1231, 1206, 1170, ? A. 1128 B. 1108 C. 1104 D. 1121 Sol: 1256 – 32 = 1247 1247 – 42 = 1231 1231 – 52 = 1206 1206 – 62 = 1170 1170 – 72 = 1121

The average age of A, B, C and D is 40 years. The present age of B is 90% of the present age of A and the present age of D is 40% of the present age of C. If 10 years hence the age of B is 24 years less than the age of

Mixture X contains 70% of juice and the remaining water, mixture Y of 64 litres contains juice and water in the ratio of 3:1, if both are mixed in the third container, then the quantity of water in the final mixture is 29.5liters. Find the total volume of Mixture X (in litres)? A.            40 litres

Amit, Rishi and Vinod invested Rs 15000, 10000 and 5000 respectively in a partnership business. The annual profit share of Vinod is Rs 15000 out of the total profit of Rs 60000 and the profit share of Amit is Rs 15000 more than the profit share of Rishi. Then find the ratio of time period

Direction: Find out the missing number in the following number series. Q) 13, 26, 78, ?, 2730, 30030 A. 312 B. 390 C. 448 D. 273 E. 39 Sol: 13 * 2 = 26 26 * 3 = 78 78 * 5 = 390 390 * 7 = 2730 2730 * 11 = 30030

Train A crosses a man standing on a platform in 10.8 seconds. Train B crosses train A is running in the opposite direction in 16 seconds. If the length of train A and B is 180 m and 220 m respectively, then what is the time taken by train B to cross a car is

150% of the number A is equal to half of the number B. If 3 is added to number A, then the number A becomes 180 of its reciprocal. Find the number B? A.            20 B.            48 C.            64 D.            36 E.            None of these Sol: Let the number A = 2x And the number

Direction: What value should come in the place of (?) in the following questions. Q) (7/84) of (12/156) of 4680 = 45 – ? A.            15 B.            20 C.            25 D.            30 E.            None of these Sol: (7/84)*(12/156)*4680 = 45 – x 30 = 45 – x x = 45 – 30 = 15

43.132 + 27.972 – 49.212 = ? A. 286 B. 276 C. 258 D. 232 E. 248 Sol: 43.132 + 27.972 – 49.212 = ? 1849 + 784 – 2401 = ? ? = 232