Mamun is twelfth from the left and Alam is fifteenth from the right in a row. If we interchange their positions, Alam becomes twentieth from right. How many boys are there in the row ?

Mamun is twelfth from the left and Alam is fifteenth from the right in a row. If we interchange their positions, Alam becomes twentieth from right. How many boys are there in the row ? Correct Answer 31

Bissoy MCQ

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