How many children are there between P and Q in a row of children ?
Statements:
1. P is fifteenth from the left in the row.
2. Q is exactly in the middle and there are ten children towards his right.

I alone is sufficient while II alone is not sufficient

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II alone is sufficient while I alone is not sufficient

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Either I or II is sufficient

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Neither I nor II is sufficient

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Both I and II are sufficient

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Solution

The correct option is D Both I and II are sufficient
From II, Q being in the middle, there are 10 children to his right as well as to his left. So, Q is 11th from the left.
From I, P is 15th from the left.
Thus, from both I and II, we conclude that there are 3 children between P and Q.

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How many children are there between P and Q in a row of children ?Statements:1. P is fifteenth from the left in the row.2. Q is exactly in the middle and there are ten children towards his right.

The correct option is D Both I and II are sufficientFrom II, Q being in the middle, there are 10 children to his right as well as to his left. So, Q is 11th from the left.From I, P is 15th from the left.Thus, from both I and II, we conclude that there are 3 children between P and Q.

How many children are there between P and Q in a row of children ?
Statements:
1. P is fifteenth from the left in the row.
2. Q is exactly in the middle and there are ten children towards his right.

The correct option is D Both I and II are sufficient
From II, Q being in the middle, there are 10 children to his right as well as to his left. So, Q is 11th from the left.
From I, P is 15th from the left.
Thus, from both I and II, we conclude that there are 3 children between P and Q.