| Which number will replace the question mark (?) in the following series? |
| निम्नलिखित श्रृंखला में कौन-सी संख्या प्रश्न चिह्न (?) के स्थान पर आएगी? |
| 12, 22, 42, 72, ? |
A) 102
B) 92
C) 122
D) 112
Correct Answer: D
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