Q1. A class of boys is standing in only one row. A boy is at the thirty-third position from both ends in this sequence. How many boys are there in the class?
Explanation
If a boy is thirty-third from the left end, there are 32 boys before him. If he is also thirty-third from the right end, there are 32 boys after him. The total number is therefore 32 + 1 + 32 = 65. The counts 64 and 66 arise from subtracting or adding one incorrectly while combining the two positions. The count 69 has no support from the given positions, because the boy's own place must be counted only once, not repeatedly.
