InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
8, 28, 116, 584, ? |
| Answer» The pattern is x 3 + 4, x 4 + 4, x 5 + 4,..... So, missing term = 584 x 6 + 4 = 3508. | |
| 102. |
_ stt _ tt _ tts _ |
| Answer» The series is tst/tst/tst/tst. Thus, the pattern 'tst' is repeated. | |
| 103. |
gfe _ ig _ eii _ fei _ gf_ ii |
| Answer» The series is gfeii/gfeii/gfeii/gfeii. Thus, the pattern 'gfeii' is repeated. | |
| 104. |
_ a _ b _ abaa _ bab _ abb |
| Answer» The series is baa/bba/baa/bba/baa/bb. Thus, the pattern baa/bba is repeated. | |
| 105. |
abca _ bcaab _ ca _ bbc _ a |
| Answer» The series is abc/aabc/aabbc/aabbcc/a. | |
| 106. |
_ tu _ rt _ s _ _ usrtu _ |
| Answer» The series rtus/rtus/rtus/rtus. Thus, the pattern 'rtus' is repeated. | |
| 107. |
WFB, TGD, QHG, ? |
| Answer» | |
| 108. |
AZ, GT, MN, ?, YB |
| Answer» | |
| 109. |
H, I, K, N, ? |
| Answer» | |
| 110. |
Z, S, W, O, T, K, Q, G, ?, ? |
| Answer» The given sequence is a combination of two series: I. Z, W, T, Q, ? and II. S, O, k, G, ? | |
| 111. |
b e d f ? h j ? l |
| Answer» The series may be divided into groups as shown: b e d / f ? h / j ? l Clearly in the first group, the second and third letters are respectively three and two steps ahead of the first letter. A similar pattern would follow in the second and third groups. | |
| 112. |
121, 143, 165, 186, 209 |
| Answer» Each term in the series is obtained by adding 22 to the preceding term. So, 186 is wrong and must be replaced by (165 + 22) i.e. 187. | |
| 113. |
6, 15, 35, 77, 165, 221 |
| Answer» The terms of the series are products of two consecutive prime numbers i.e. (2 x 3), (3 x 5), (5 x 7), (7 x 11),..... So, 165 is wrong and must be replaced by (11 x 13) i.e. 143. | |
| 114. |
1, 2, 4, 8, 16, 32, 64, 96 |
| Answer» Each term of the series is obtained by multiplying the preceding term by 2. So, 96 is wrong and must be replaced by (64 x 2) i.e. 128. | |
| 115. |
3, 4, 10, 32, 136, 685, 4116 |
| Answer» The correct pattern is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4,..... So, 32 is wrong and must be replaced by (10 x 3 + 3) i.e. 33. | |
| 116. |
1, 1, 2, 6, 24, ?, 720 |
| Answer» The pattern is x 1, x 2, x 3, x 4,..... So, missing term = 24 x 5 = 120. | |
| 117. |
2, 15, 4, 12, 6, 7, ?, ? |
| Answer» Let the missing terms of the series be x1 and x2. Thus, the sequence 2, 15, 4, 12, 6, 7, x1 x2 is a combination of two series : I. 2, 4, 6, x1 and II. 15, 12, 7, x2I consists of consecutive even numbers. So, missing term, x1 = 8. The pattern in II is - 3, - 5,......So, missing term, x2 = 7 - 7 = 0. | |
| 118. |
4832, 5840, 6848, ? |
| Answer» The pattern is + 1008. So, missing term - 6848 + 1008 = 7856. | |
| 119. |
5824, 5242, ?, 4247, 3823 |
| Answer» Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of the preceding term. So, missing term = 5242 - 524 = 4718. | |
| 120. |
2, 8, 16, 128, ? |
| Answer» Each term in the series, except the first two terms, is the product of the preceding two terms. So, missing term = 16 x 128 = 2048. | |
| 121. |
10, 100, 200, 310, ? |
| Answer» The pattern is + 90 + 100, + 110,..... So, missing term = 310 + 120 = 430. | |
| 122. |
11, 10, ?, 100, 1001, 1000, 10001 |
| Answer» The pattern is - 1, x 10 + 1, - 1, x 10 + 1, - 1, x 10 + 1, ..... So, missing term = 10 x 10 + 1 = 101. | |
| 123. |
2,3,8,27, 112,? |
| Answer» The pattern is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4,..... So, missing term = 112 x 5 + 5 = 565. | |
| 124. |
6, 17, 39, 72, ? |
| Answer» The pattern is + 11, + 22, + 33, ..... So, missing term = 72 + 44 = 116. | |
| 125. |
20, 20, 19, 16, 17, 13, 14, 11, ?, ? |
| Answer» Let the missing terms of the series be x1 and x2. Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11, xv x2 is a combination of two series : I. 20, 19, 17, 14, x1 and II. 20, 16, 13, 11, x2 The pattern in I is - 1, - 2, - 3,......So, missing term, x1 = 14 - 4 = 10. The pattern in II is - 4, - 3, - 2,......So, missing term, x2 = 11 - 1 = 10. | |
| 126. |
66, 36, 18, ? |
| Answer» Each term in the series is the product of the digits of the preceding term. So, missing term = 1 x 8 = 8. | |
| 127. |
In the series 3, 9, 15, ...... what will be the 21st term? |
| Answer» Clearly, 3 + 6 = 9, 9 + 6 = 15,..... So, the series is an A.P. in which a = 3 and d = 6. Therefore 21st term = a + (21 - 1) d = a + 20d = 3 + 20 x 6 = 123. | |
| 128. |
2,2,5, 13,28,? |
| Answer» The pattern is + 0, + 3, + 8, + 15, ..... i.e. + (l2 - 1), + (22 - 1), + (32 - 1), + (42 - 1), ..... So, missing term = 28 + (52 - 1) = 28 + 24 = 52. | |
| 129. |
0, 2, 8, 14, ?, 34 |
| Answer» The pattern is + 2, + 6, + 6, + 10, + 10,..... So, missing term = 14 + 10 = 24. | |
| 130. |
1, 5, 14, 30, 55, 91, ? |
| Answer» The pattern is + 4, + 9, + 16, + 25, + 36, ..... i.e. + 22, + 32, + 42, + 52, + 62,..... So, missing term = 91 + 72 = 91 + 49 = 140. | |
| 131. |
240, ?, 120, 40, 10, 2 |
| Answer» The pattern is ÷ 1, ÷ 2, ÷ 3, ÷ 4, ÷ 5. So, missing term = 240 ÷ 1 = 240. | |
| 132. |
28, 33, 31, 36, ?, 39 |
| Answer» The pattern is + 5, - 2, + 5, - 2,..... So, missing term = 36 - 2 = 34. | |
| 133. |
1, 9, 25, 49, 81, ? |
| Answer» The series consists of squares of consecutive odd numbers i.e. 12, 32, 52, 72, 92,..... So, missing term = 112 = 121. | |
| 134. |
1, 9, 25, 49, ?, 121 |
| Answer» The given series consists of squares of consecutive odd numbers i.e. 12, 32, 52, 72,..... So, missing term = 92 = 81. | |
| 135. |
24, 60, 120, 210, ? |
| Answer» The pattern is + 36, + 60, + 90,.....i.e. + [6 x (6 + 0)], + [6 x (6 + 4)], + [6 x (6 + 9)],... So, missing term = 210 + [6 x (6 + 15)] = 210 + 126 = 336. | |
| 136. |
625, 5, 125, 25, 25, ?, 5 |
| Answer» The given sequence is a combination of two series : I. 625, 125, 25, 5 and II. 5, 25, ? The pattern in I is ÷ 5, while that in II is x 5. So, missing term = 25 x 5 = 125. | |
| 137. |
2,15,41,80,? |
| Answer» The pattern is + 13, + 26, + 39,..... So, missing term = 80 + 52 = 132. | |
| 138. |
6, 11, 21, 36, 56, ? |
| Answer» The pattern is + 5, + 10, + 15, + 20, ... So, missing term = 56 + 25 = 81. | |
| 139. |
563, 647, 479, 815, ? |
| Answer» The pattern is + 84, - 168, + 336,.....i.e. + 84, - (84 x 2), + (84 x 22), ..... So, missing term = 815 - (84 x 23) = 815 - 672 = 143. | |
| 140. |
13, 35, 57, 79, 911, ? |
| Answer» The terms of the given series are numbers formed by joining together consecutive odd numbers in order i.e. 1 and 3, 3 and 5, 5 and 7, 7 and 9, 9 and 11, ..... So, missing term = number formed by joining 11 and 13 = 1113. | |
| 141. |
1, 4, 10, 22, 46, ? |
| Answer» The pattern is + 3, + 6, + 12, + 24,..... So, missing term = 46 + 48 = 94. | |
| 142. |
13, 32, 24, 43, 35, ?, 46, 65, 57, 76 |
| Answer» The given sequence is a combination of two series: I. 13, 24, 35, 46, 57 and II. 32, 43, ?, 65, 76 The pattern in both I and II is + 11. So, missing term = 43 + 11 = 54. | |
| 143. |
22, 24, 28, ?, 52, 84 |
| Answer» The pattern is + 2, + 4, + 8, + 16,..... So, missing term = 28 + 8 = 36. | |
| 144. |
3, 15, ?, 63, 99, 143 |
| Answer» The terms of the given series are (22 - 1), (42 - 1),....., (82 - 1), (102 - 1), (122 - 1). So, missing term = (62 - 1) - (36 - 1) = 35. | |
| 145. |
90, 180, 12, 50, 100, 200, ?, 3, 50, 4, 25, 2, 6, 30, 3 |
| Answer» Clearly, 90 = 30 x 3, 180 = 6 x 30, 12 = 2 x 6, 50 = 25 x 2, 100 = 4 x 25, 200 = 50 x 4. So, missing term = 3 x 50 = 150. | |
| 146. |
48, 24, 96, 48, 192, ? |
| Answer» The pattern is ÷ 2, x 4, ÷ 2, x 4, ..... So, missing term = 192 ÷ 2 = 96. | |
| 147. |
2, 7, 27, 107, 427, ? |
| Answer» The pattern is + 5, + 20, + 80, + 320, ...... i.e. + (5 x 12), + (5 x 22), + (5 x 42), + (5 x 82),..... So, missing term = 427 + (5 x 162) = 427 + 1280 = 1707. | |
| 148. |
1, 1, 4, 8, 9, 27, 16, ? |
| Answer» The series consists of squares and cubes of consecutive natural numbers i.e. 12, 13, 22, 23, 32, 33, 42, ..... So, missing term = 43 = 64. | |
| 149. |
2, 5, 9, ?, 20, 27 |
| Answer» The pattern is + 3, + 4, + 5, + 6,..... So, missing term = 9 + 5 = 14. | |
| 150. |
2, 3, 3, 5, 10, 13, ?, 43, 172, 177 |
| Answer» The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5. So, missing term = 13 x 3 = 39. | |