Multiple choice

Find the incorrect term in the given sequence. 4, 9, 19, 39, 79, 160, 319

  1. 319

  2. 160

  3. 39

  4. 19
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B Correct answer
Explanation

The pattern is x 2 + 1 i.e 4 x 2 +1 = 9, 9 x 2 + 1 = 19 and so on. So, it should be 79 x 2 + 1 = 159 in place of 160.

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