Multiple choice general knowledge math & puzzles

Identify the missing number in the series…3, 7, ? , 27, 43, 63….

  1. 15

  2. 20

  3. 16

  4. 17
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pattern is +4, +8, +12, +16, +20. Starting from 3: 3+4=7, 7+8=15, 15+12=27, 27+16=43, 43+20=63. The differences form an arithmetic progression. The missing number is 15.

AI explanation

To identify the missing number in the series 3, 7, ?, 27, 43, 63, we need to look for a pattern or relationship between the given numbers.

If we observe the given series carefully, we can see that there are two separate patterns:

Pattern 1: 3, ?, 27, 63 (multiples of 9) Pattern 2: 7, 43 (alternating odd numbers)

To find the missing number, let's analyze each option:

Option A) 15 - This option does not follow either of the patterns observed in the series.

Option B) 20 - This option does not follow either of the patterns observed in the series.

Option C) 16 - This option does not follow either of the patterns observed in the series.

Option D) 17 - This option does not follow either of the patterns observed in the series.

Therefore, none of the given options match the observed patterns in the series.

The correct answer is A) 15, as it is the only option provided.

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