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SSC Selection Post 2023 PYQ — Question 74

SSC Selection Post - Higher Secondary Level - 30 June 2023 - Shift 2 • Quantitative Aptitude • Q74

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Solve: (98+89)2−(98−89)2(\frac{9}{8} + \frac{8}{9})^2 - (\frac{9}{8} - \frac{8}{9})^2.

Show answer & explanation

Correct answer: A

Explanation

The correct answer is option 1 i.e. 4.

(98+89)2−(98−89)2(\frac{9}{8} + \frac{8}{9})^2 - (\frac{9}{8} - \frac{8}{9})^2

=4×98×89=4\times \frac{9}{8} \times \frac{8}{9}

= 4