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SSC CHSL 2023 PYQ — Question 75

SSC CHSL 2023 - 03 Aug 2023 - Shift 1 • Quantitative Aptitude • Q75

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Simplify the following expression.

0.01 + 0.68 ×\times 0.68 + 0.22  ×\times  0.22 + 0.044 + 0.136 + 0.44  ×\times 0.68

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Correct answer: B

Explanation

The correct answer is option 2 i.e 1.

Given that

0.01 + 0.68 ×\times 0.68 + 0.22  ×\times  0.22 + 0.044 + 0.136 + 0.44 ×\times 0.68

Formula used

(a + b)2 = a2 + 2ab + b2

⇒ 0.01 + 0.682 + 0.222 + 2 ×\times0.22 ×\times 0.68 + 0.044 + 0.136 

⇒ 0.01 + (0.68 + 0.22)2 + 0.044 + 0.136

⇒  0.01 + 0.902 + 0.044 + 0.136

⇒  0.01 + 0.81+ 0.044 + 0.136

⇒ 1