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What will come in place of the question mark (?) in the given equation? 240 + 15 + ? = 42 × 8.5

1. 14
2. 20
3. 11
4. 15

Correct answer: 20

Solution

The right-hand side is 42 × 8.5 = 357. The left side becomes 240 + 15 + ? = 255 + ?. So ? = 357 - 255 = 102, which does not match the options; the intended equation is likely 240 ÷ 15 + ? = 42 × 8.5 or similar. Based on the provided answer key, the expected option is 20.

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