4, 16, 36, 64, …. 144
Answer: C
Solution. (c) The series is square of consecutive even numbers. 22, 42,62, 82
Next number is 102 = 100
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3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?
Answer: B
The given sequence is a combination of two series :
I. 3, 7, 13, 21, 31, ? and II. 4, 7, 13, 22, 34
The pattern in I is + 4, + 6, + 8, + 10,.....
The pattern in II is + 3, + 6, + 9, + 12,.....
So, missing term = 31 + 12 = 43.
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101, 401, 901, 1601, 2501, …. 4901
Answer: D
Solution. (d) The series is 102 + 1, 202 +1, 302 + 1, 402 + 1, 502 + 1, etc.
The next number is 602 + 1 = 3601
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Find the wrong number in the series. 7, 28, 63, 124, 215, 342
Answer: B
The correct sequence is 23 - 1, 33 - 1, 43 - 1, ...etc. Here 28 is wrong; so the answer is (2)
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990, 7980, 26970, 63960,….
Answer: D
The series is 103 – 10, 203 – 20, 303 – 30 etc.
The next number is 503 – 50 = 124950
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2, 6, 12, 20, 30,…. 56
Answer: C
Solution. (c) The series is 12 + 1, 22 + 2, 32 + 3, 42 + 4, 52 + 5, etc.
The next number is 62 + 6 = 42
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Which is the number that should come next in the following series? 4, 6, 12, 14, 28, 30, ——
Answer: D
The given sequence is a combination of two series 4, 12, 28, .... and 6, 14, 30, .... Clearly the number to be found belongs to the first series. Now the pattern followed is +8, +16, +32. So, missing number = (28 + 32) = 60 Hence the answer is (4)
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17, 26, 37, 50, 65,….101
Answer: A
Solution. (a) The series is 42 + 1, 52 +1, 62 + 1, 72 + 1, 82 + 1.
The next number is 92 + 1 = 82
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5, 11, 17, 25, 33, 43, ——
Answer: D
No answer description available for this question.
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999, 7999, 26999, 63999,….
Answer: B
The series is 103 – 1, 203 – 1, 303 – 1, etc.
The next number is 503 – 1 = 124999
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