Multiple choice

Find the wrong number in the following number series.()\n31\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,43\,\,\,\,\,\,\,\,\,\,\,57\,\,\,\,\,\,\,\,\,\,\,\,\,73\,\,\,\,\,\,\,\,\,\,\,\,93\,\,\,\,\,\,\,\,\,\,\,\,\,\,111

  1. 111

  2. 73

  3. 93

  4. 43
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C Correct answer
Explanation

Pattern: n² + n, then multiply by 2, 3, 4... 31+31=62x2=124; 43+43=86x3=258; 57+57=114x4=456; 73+73=146x5=730. Following this, 93 should produce 187x6=1122, not 93x6=558. 93 is wrong.

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