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What value should come in place of the question mark (?) in the following expression? (845% of 500) ÷ ?2 = \sqrt{625}

1. 13
2. 25
3. 6
4. 5

Correct answer: 13

Solution

Compute 845% of 500 = 8.45 × 500 = 4225, and \sqrt{625} = 25. So the equation becomes 4225 ÷ ?2 = 25, which gives ?2 = 169 and hence ? = 13. The OCR likely missed the multiplication sign, making the denominator 13 × 2 = 26 in appearance, but the intended value is 13.

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