Which of the following numbers will replace the question mark (?) in the given series?
Which of the following numbers will replace the question mark (?) in the given series?
निम्नलिखित श्रृंखला में प्रश्नवाचक चिन्ह (?) के स्थान पर कौन-सी संख्या आएगी?
7, 9, 13, 21, 37, ?
Detailed Solution & Logic
Correct Answer:
69
Given series:
7, 9, 13, 21, 37, ?
Find the pattern in differences:
- $9 - 7 = 2$
- $13 - 9 = 4$
- $21 - 13 = 8$
- $37 - 21 = 16$
The differences are doubling each time:
$2, 4, 8, 16$
Next difference:
$16 \times 2 = 32$
So,
$37 + 32 = 69$
Correct Answer: 69
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