In a row of boys facing north, A is 21st from the left and B is 9th from the right. C is 5th to the right of A and 7th to the left of B. How many boys are there in the row?
Explanation:
A is 21st from the left end and C is 5th to the right of A. So, C is 21 + 5 = 26th from the left end.
B is 9th from the right end and C is 7th to the left of B. So, C is 9 + 7 = 16th from the right end.
∴ Total number of boys in the row = 26 + 16 − 1 = 41.
Hence, option (d).
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