Instructions

What should come in place of question mark (?) in the following questions?

Question 84

8934-3257+481=?+2578

Solution

Let the number to replace the question mark be equal to X

So, 8934-3257+481=X+2578
Or, 6158 = X + 2578
Or, X = 3580

Hence, the correct answer is option (b)

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