Test Of Quantitative Reasoning (Number Series)

Test Of Quantitative Reasoning (Number series)
1} 13, 35, 57, 79, 911, _________(a) 1113 (b) 1110 (c) 1112 (d) 1315
2 } 4, 6, 8, 9, 10 , _________(a) 11 (b) 12 (c)13 (d)17
3} 7, 13, 23, 41, 75, _______(a) 139 (b) 141 (c) 143 (d) 145
4} 121, 232, 353, 474, 5115, ________(a) 7611 (b) 125 (c) 6135 (d) 6136
5} 2, 12, 34, 74, 138, __________(a) 192 (b) 202 (c) 212 (d) 232
6} 2, 7, 14, 23, 34, ____(a) 47 (b) 57 (c) 49 (d) 48
7} 67, 71, 73, 79, 83, ____(a) 85 (b) 86 (c) 87 (d) 89
8} 6, 13, 25, 51, 101, _______(a) 201 (b) 202 (c) 203 (d) 205
9} 2, 12, 30, 56, 90, ____(a) 132 (b) 121 (c) 130 (d) 129
10} 2, 5, 13, 31, 69, ___(a) 111 (b) 121 (c) 128 (d) 147
11} 721, 618, 515, 412, 309 ______(a) 206 (b) 216 (c) 245 (d) 212
12} 8, 24, 48, 80, 120, _____(a) 158 (b) 162 (c) 164 (d)168
13} 7, 65, 215, 513, 999, _________(a) 1011 (b) 1528 (c) 1729 (d) 1829
14} 11, 14, 24, 41, 65, ______(a) 91 (b) 93 (c) 96 (d) 98
15} 23, 27, 43, 79, 143, ________(a) 243 (b) 242 (c) 241 (d) 240
16} 4, 8, 28, 80, 34, _____(a) 278 (b) 428 (c) 628 (d) 728
17} 11, 13, 17, 19, 23, _____(a) 27 (b) 29 (c) 31 (d) 37
18} 12, 14, 17, 22, 29, ________(a) 40 (b) 41 (c) 42 (d) 38
19} 1, 9, 25, 49, 81, ____(a) 112 (b) 100 (c)121 (d)144
20} 13, 25, 51, 111, 203, ________(a) 405 (b) 406 (c) 407 (d) 411
21} 2, 7, 28, 63, 126, _____(a) 216 (b) 217 (c) 215 (d) 219
22} 3, 15, 35, 63, 99, ____(a) 13 (b) 137 (c) 139 (d) 143
23} 2, 7, 24, 77, 238, ____(a) 723 (b) 733 (c) 721 (d) 725
24} 999, 730, 511, 344, 215, _____(a) 123 (b) 124 (c) 125 (d) 126
25} 10, 19, 36, 69, 134, ____(a) 266 (b) 268 (c) 263 (d) 261
ANSWER KEY
1 (a) Successive odd numbers.
2 (b) These are composite numbers,next to 10 , 12 is such number
3 (b) Double each number and subtract 1,3,5,7 etc from the result.
4 (d) Extreme numbers are increased by one and in the middle there is a prime number.
5 (d) Difference of 2 successive terms are 10,22,40,64.. again the diff among these is 12,18,24 . Thus the differences between 138 and next term is 64 +30 ie 94. Therefore by this logic the next term would be 138 +94 = 232.
6 (a) Differences are 5,7,9,11,13,15 …
7 (d) A prime number series
8 (c) Double the number and then operate +1 and -1 alternately.
9 (a) Differences of two successive terms are increasing by8. Thus the next term would be 90 + 42 + 132
10(d) Double the number and to them respectively 1,3,5,7,9 etc.
11 (a) The numbers are decreasing by 103.
12 (d) Differences of the terms are increasing by 8.
13 (c) 2³- 1 , 4³ +1, 6³-1, 8³+1, 10³-1 ,12³+1…so on
14 (c) Differences are increasing by 7
15 (a) Differences of two successive numbers are as 2²,4²,6²,8²,10² so on
16 (d) The terms are written as 31+1, 3²-1, 3³+1, 34-1, 35+1, 36-1 etc
17 (b) A Prime number series
18 (a) Differences of two successive terms are the prime numbers 2,3,5,7,11 etc . Hence the next numbers are 29 + 11 = 40.
19 (c) Squares of odd numbers.
20 (a) Double the numbers and operate -1 and +1 respectively.
21 (c) 1³+1, 2³-1, 3³+1, 4³-1, 5³+1, 6³-1 and so on.
22 (d) Differences of two successive terms are 12,20,28,36,44 and so on
23 (a) Multiply the numbers by 3 and then add 1,3,5,7,11,13 etc.
24 (d) 10³-1, 9³+1, 8³-1, 7³+1, 6³-1, 5³+1 etc
25 (c) Double the numbers and subtract from the result 1,2,3,4,5 .........