Question

Which is the incorrect term in the following series?

5, 13, 37, 111, 325, 973

• A. 13
• B. 37
• C. 111
• D. 325
• E. 973

Answer 1

The correct option is C

111

The series is $\times 3–2,\times 3–2,...So,5\times 3–2=13,13\times 3–2=37,$

$37\times 3–2=109,109\times 3–2=325,325\times 3–2=973,...$