Quantitative aptitude

21, 20, ?, 4, 53, -28 A.60 B.4 C.40 D.29 E.36 Sol: 21 -12 = 20 20 + 32 = 29 29 – 52 = 4 4 + 72 = 53 53 – 92 = -28

9, 12, 20, 35, 59, ? A.80 B.98 C.94 D.88 E.84 Sol: 9 + (3 * 1) = 12 12 + (4 * 2) = 20 20 + (5 * 3) = 35 35 + (6 * 4) = 59 59 + (7 * 5) = 94

40, 104, 153, 189, 214, ? A.215 B.230 C.244 D.250 E.262 Sol: The series follows pattern as, 40 + 82 = 104 104 + 72 = 153 153 + 62 = 189 189 + 52 = 214 214 + 42 = 230

27, ?, 820, 920, 2251, 2395 A.41 B.61 C.91 D.81 E.145 Sol: 27 + 82 = 91 91 + 93 = 820 820 + 102 = 920 920 + 113 = 2251 2251 + 122 = 2395

Direction: Find out the wrong number in the following number series. Q. 26, 62, 122, 214, 338, 506 A.122 B.338 C.214 D.506 E.62 Sol: 33 – 1 = 26 43 – 2 = 62 53 – 3 = 122 63 – 4 = 212 73 – 5 = 338 83 – 6 = 506

Direction: What approximate value should come in the place of (?) in the following questions? Q. 34.91 * 25.18 – 15.09 * 4.91 = ? * 19.92 A.20 B.30 C.40 D.50 E.25 Sol: 34.91 * 25.18 – 15.09 * 4.91 = ? * 19.92 875 – 75 = ? * 20 ? = 40

Latha covers a certain distance from his house to office by bike. She travelled at the speed of 60 km/hr, he reached the office 10 minutes late. So, she increased the speed by 20 km/hr, she would have reached the office 5 minutes earlier. Then find the distance between her house to office? A.            40

Direction: Find out the wrong number in the following number series. Q. 3, 7, 13, 20, 31 A.3 B.7 C.13 D.20 E.21 Sol: 12 + 2 = 3 22 + 3 = 7 32 + 4 = 13 42 + 5 = 21 52 + 6 = 31

Direction: Find out the wrong number in the following number series. Q. 10, 24, 68, 100, 222 A.10 B.24 C.68 D.100 E.222 Sol: 23 + 2 = 10 33 – 3 = 24 43 + 4 = 68 53 – 5 = 120 63 + 6 = 222

14 % of 750 – (3/8) of (5/7) of 280 =? + 150÷ 3 ÷ 5 A.40 B.50 C.20 D.30 E. None of these Sol: 14 % of 750 – (3/8) of (5/7) of 280 = x + 150 ÷ 3 ÷ 5 (14/100) * 750 – (3/8) * (5/7) * 280 – (150/3) *