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Find the value of (642 - 362) - 800.

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Find the value of (642 - 362) - 800.
1. 2800
2. 3600
3. 2000
4. 1000
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Correct Answer - Option 3 : 2000

Given:

(642 - 362) - 800

Formula Used:

(x2 - y2) = (x + y)(x - y)

Calculation:

(642 - 362) - 800

⇒ (64 + 36)(64 - 36) - 800

⇒ 100 × 28 - 800

⇒ 2800 - 800

⇒ 2000

∴ The vlaue of (642 - 362) - 800 is 2000.

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