In a row of boys, if A who is tenth from the left and B who is ninth from the right interchange their positions. A becomes fifteenth from the left. How many boys are there in the row?

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Solution

The correct option is B 23
Clearly, A’s new position is 15th from the left. But this is the same as B’s earlier position which is 9th from the right.
Therefore total number of boys in the row is 15 + 8 =23

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In a row of boys, if A who is tenth from the left and B who is ninth from the right interchange their positions. A becomes fifteenth from the left. How many boys are there in the row?

The correct option is B 23Clearly, A’s new position is 15th from the left. But this is the same as B’s earlier position which is 9th from the right. Therefore total number of boys in the row is 15 + 8 =23

The correct option is B 23
Clearly, A’s new position is 15th from the left. But this is the same as B’s earlier position which is 9th from the right.
Therefore total number of boys in the row is 15 + 8 =23