The wrong number in the sequence 56, 72, 90, 110, 130, 156 is?
The wrong number in the sequence 56, 72, 90, 110, 130, 156 is?
1). 72
2). 110
3). 130
4). 156
1 answers
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# Difference between adjacent numbers forms arithmetic progression starting from 16
⇒ 72 - 56 = 16
⇒ 90 - 72 = 18
⇒ 110 - 90 = 20
Hence next should be number with difference 22
⇒ x - 110 = 22
⇒ x = 132
⇒ 156 - 132 = 24
Hence ,130 is wrong
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