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28 + 29 + 210 + 211 is divisible by

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28 + 29 + 210 + 211 is divisible by


1. 15
2. 9
3. 21
4. 18
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1 Answer

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Best answer
Correct Answer - Option 1 : 15

Given:

28 + 29 + 210 + 211

Calculation:

28 + 29 + 210 + 211

⇒ 28(20 + 21 + 22 + 23)

⇒ 28(1 + 2+ 4+ 8)

⇒ 28 × 15

∴ 28 + 29 + 210 + 211 is divisible by 15.

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