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Q:
A) 31 | B) 91 |
C) 56 | D) 15 |
Answer: B) 91
Explanation:
Explanation:
1, 1 + 12 = 2, 2 + 22 = 6, 6 + 32 = 15, 15 + 42 = 31, 31 + 52 = 56, 56 + 62 = 92
Last number of given series must be 92 not 91.