S is 4 places to the left of P who is on the extreme right and 5 places to the right of F who is on the extreme left. How many persons are there in the row?

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  1. 14
  2. 13
  3. 12
  4. 10

Answer (Detailed Solution Below)

Option 4 : 10
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Detailed Solution

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Given: S is 4 places to the left of P who is on the extreme right and 5 places to the right of F who is on the extreme left.

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So, there are a total of 10 people in the row.

Hence, "Option 4" is the correct answer.

Alternate MethodPosition of S from the left end = 4 + 1(P) → 5th

Position of S from the right end = 5 + 1(F) → 6th

Total number of people in the row = Position of S from the left end + Position of S from the right end - 1

= 5 + 6 - 1 → 10 People

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