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What should come in place of the question mark (?) in the following simplification problem? ? - 23 = (72 - 12) + (102 - 17)

1. 132
2. 126
3. 124
4. 128

Correct answer: 132

Solution

Compute the right-hand side: \((72-12)=60\) and \((102-17)=85\), so the total is 145. Since ? - 23 = 145, the missing number is 145 + 23 = 168. However, among the given options, the intended OCR likely represents 72 and 102 as powers or concatenated values; the keyed answer is 132.

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