Bank PO Quantitative aptitude Quiz 35

1 . Directions (1-3) : What will come in place of question mark (?) in the following number series? $Q.$ $54\,\,\, 56 \,\,\,61 \,\,\,? \,\,\,88 \,\,\,114$ A.   66 B.   69 C.   71 D.   77 2 . $52\,\,\, 59 \,\,\,71 \,\,\,88 \,\,\,? \,\,\,137$ A.   114 B.   112 C.   113 D.   110 3 . $11\,\,\, 27 \,\,\,? \,\,\,107 \,\,\,171 \,\,\,251$ A.   57 B.   58 C.   56 D.   59 4 . A train crosses a pole in 8 seconds at the speed of 63 kmph. What is the length of the train? A.   140 metres B.   130 metres C.   135 metres D.   150 metres 5 . The sum of two consecutive numbers is 1023. The odd number is A.   519 B.   511 C.   517 D.   513 6 . Find the smallest number that can be added to 4739 so that it becomes exactly divisible by 9. A.   3 B.   4 C.   5 D.   6 7 . The average weight of 17 boxes is 92 kg. If 18 new boxes are added, the new average increases by 3 kg. What will be the average weight of the 18 new boxes ? A.   98.8 kg B.   97.8 kg C.   91.8 kg D.   92.8 kg 8 . Directions (8-10) : What will come in place of question mark (?) in the following questions? $Q.$ $4\over 9$ x 1701 + $2\over 11$ x 1386 = ? A.   180 B.   1080 C.   1008 D.   1800 9 . $1\over \sqrt{7744}$ x 22 = ? A.   0.35 B.   0.025 C.   2.5 D.   0.25 10 . $\sqrt{6561} \over \sqrt[3]{729}$ A.   13 B.   8 C.   99 D.   9

Answers & Solutions   1 .     Answer : Option C Explanation : The series is $1^ 2$ + 1, $2^ 2$ + 1, $3^ 2$ + 1, $4^ 2$ + 1, $5^ 2$ + 1, .. 2 .     Answer : Option D Explanation : The series is +7, +12, +17, +22, +27,..... 3 .     Answer : Option D Explanation : The series is +16, +32, +64, +80, .. 4 .     Answer : Option A Explanation : Speed of the train = 63 kmph = 63 x $5\over 18$ m/sec Length of the train = 63 x $5\over 18$ x 8 = 140 metres 5 .     Answer : Option B Explanation : Let the two consecutive numbers be x and x + 1. Then, x + x + 1 = 1023 or, 2x = 1022 x = $1022 \over 2$ = 511 The numbers are 511 and 512. Hence, odd number = 511 6 .     Answer : Option B Explanation : When we divide 4739 by 9, the quotient is 526 and remainder 5. Reqd number = 9 - 5 = 4 Hence, on adding 4 in 4739 it becomes exactly divisible by 9 7 .     Answer : Option B Explanation : Weight of 18 new boxes = 95 $\times$ 35 - 17 $\times$ 92 = 3325 - 1564 = 1761 Average of 18 new boxes = $1761 \over 18$ = 97.8 kg 8 .     Answer : Option C Explanation : ? = $4\over 9$ x 1701 + $2\over 11$ x 1386 = 756 + 252 = 1008 9 .     Answer : Option D Explanation : ? = $1\over \sqrt{7744} x 22$ = $22 \over 88$ = $1\over4$ = 0.25 10 .     Answer : Option D Explanation :