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A question is given, followed by two statements labelled I and II. Identify which of the statements is/are sufficient to answer the question. Question: How many soldiers are there between William and David in a row of soldiers, all facing north? Statements: (I) William is 15th from the extreme left end of the row. (II) David is exactly in the middle of the row and there are ten soldiers to his right.

A question is given, followed by two statements labelled I and II. Identify which of the statements is/are sufficient to answer the question. Question: How many soldiers are there between William and David in a row of soldiers, all facing north? Statements: (I) William is 15th from the extreme left end of the row. (II) David is exactly in the middle of the row and there are ten soldiers to his right. Correct Answer Both I and II together are sufficient

Statements:

(I) William is 15th from the extreme left end of the row.

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(II) David is exactly in the middle of the row and there are ten soldiers to his right.

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So David rank 11th from the left.

When combining Statement I and II:

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soldiers are there between William and David = William rank from right - David rank from right - 1

soldiers are there between William and David =  15 - 11 - 1 = 15 - 12 = 3

So, "3" soldiers are there between William and David

Hence, "Both I and II together are sufficient"

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