Which of the following options is the closest approximate value which will come in place of question mark(?) in the following equation?
(√142+52÷26×5-√80)×2=?

Correct option is C

Given:

(√142+52÷26×5-√80)×2=?

Formula Used:

Solution:

​ $$(\sqrt{142} + \frac{52}{26} \times 5 - \sqrt{80}) \times 2$$​​

=$$(11.916 + 2 \times 5 - 8.944)\times2$$ 

=$$(11.916 + 10 - 8.944) \times 2$$​​  

​$$= 25.944$$ 

≈ 26

Thus the correct answer is (C)

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