Logical Reasoning

Coding & Decoding

Easy

What should come in place of the question mark ‘?’ in the given series? 81, 84, 90, 99, 111, ?

135

129

126

141

✅ Correct Option: 3

The differences are:

$84-81=3$ ,

$90-84=6$ ,

$99-90=9$ ,

$111-99=12$ .

The increments increase by 3 each time, so the next increment is 15.

$111+15=126$ .

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If + means −, − means ×, × means ÷, ÷ means +, then what will come in place of the question mark (?) in the following equation? 17 ÷ 63 − 3 + 84 × 12 = ?

What should come in place of the question mark ‘?’ in the given series? 81, 84, 90, 99, 111, ?

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