In a row of boys, Alok is 4th from left and Yash is 30th from right. If they exchange their positions, Alok becomes 21st from left. How many boys are there in the row?
Explanation:
After the exchange, Alok comes to Yash’s position and becomes 21st from left.
The same position also corresponds to the 30th position from right.
∴ Total number of boys in the row = (position of Yash from left) + (position of Yash from right) – 1
= 21 + 30 – 1 = 50.
Hence, option (c).
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