Multiple choice

\text{What approximate value will come in place of question mark (?) in the following questions?} \ \frac{1}{5}(\sqrt{143}+\sqrt{170}) + \frac{1}{6}(\sqrt{122}+\sqrt{168}) = ?

  1. 11

  2. 9

  3. 4

  4. 13

  5. 18
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Approximating square roots: √143 ≈ 11.96, √170 ≈ 13.04, √122 ≈ 11.05, √168 ≈ 12.96. First term: (11.96+13.04)/5 = 25/5 = 5. Second term: (11.05+12.96)/6 ≈ 24/6 = 4. Total = 5+4 = 9. Answer B (9) is correct.

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