Multiple choice

What approximate value will come at place of question mark (?) in the following questions?( ?^{2} = 479\% \text{ of } 121 - 400\% \text{ of } 105 )

  1. 9

  2. 13

  3. 5

  4. 17

  5. 22
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Calculate RHS: 479% of 121 = 4.79 × 121 ≈ 579.6. 400% of 105 = 4 × 105 = 420. RHS = 579.6 - 420 = 159.6. So ?² = 159.6, giving ? ≈ 12.63. Among options, 13 is closest. Option B is correct.

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