Quantitative aptitude

19.98 * 21.21 ÷ √145 = ?3 + (1.98)3 A.1 B.3 C.5 D.4 E.7 Sol: 19.98 * 21.21 ÷ √145 = ?3 + (1.98)3 20 * 21/12 = ?3 + 8 ? = 3

120.981 – √530 * 4.989 + 405.912 ÷ √840=? A.10 B.15 C.20 D.25 E.30 Sol: 120.981 – √530 * 4.989 + 405.912 ÷ √840 = ? 121 – 115 + 14 = ?  20 = ?

The average present age of Anusha, Nila and Diya is 36 years. If the ratio of the ages of Nila and Diya after 4 years is 10:13 and Anusha is 24 years younger than Diya, then find the present age of Nila? A.            26 years B.            36 years C.            46 years D.            56 years E.           

Directions: Find out the wrong number in the following number series. Q. 287, 359, 437, 839, 959, 1367 A.437 B.839 C.959 D.1367 E.359 Sol: 172 – 2 = 287 192 – 2 = 359 232 – 2 = 527 292 -2 = 839 312 – 2 = 959 372 – 2= 1367

Directions: Find out the wrong number in the following number series. Q. 20, 57, 118, 209, 336, 508 A.336 B.118 C.209 D.508 E.57  Sol: 33 – 7 = 20 43 – 7 = 57 53 – 7 = 118 63 – 7 = 209 73 – 7 = 336 83 – 7 = 505

Q. Arul and Arun started the business with the investment of Rs.(x + 1000) and Rs.(x – 500) respectively. After one year, Arun withdrew Rs.450 from its initial investment. At the end of two years, the total profit of the business is Rs.11400 and the profit share of Arul is Rs.8000. Find the value of

Ratio of the speed of the stream and downstream speed of the boat is 3:10 respectively. If the boat covers 280 km in still water in 8 hours, then find the time taken by the boat to cover 300 km upstream? A.            9 hours B.            11 hours C.            7 hours D.            15 hours E.            None

324, 335, ?, 346, 302, 357 a) 364 b) 357 c) 310 d) 313 e) None of these Sol: 324 + 11 = 335 335 – 22 = 313 313 + 33 = 346 346 – 44 = 302 302 + 55 = 357

2, 7, 17, ?, 60, 97 a)            34 b)            38 c)            42 d)            48 e)            51 Sol: 2 + 22 + 1 = 7 7 + 32 + 1 = 17 17 + 42 + 1 = 34 34 + 52 + 1 = 60 60 + 62 + 1 = 97

12, 42, 77, 117, 162, ? a) 216 b) 212 c) 208 d) 218 e) 204 Sol: 12 + 30 = 42 42 + 35 = 77 77 + 40 = 117 117 + 45 = 162 162 + 50 = 212