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Properties of Set Operation

In a row of b...

Question

In a row of boys, Srinath is 7th from the left and Venkat is 12th from the right. If they interchange their positions, Srinath becomes 22nd from the left. How many boys are there in the row?

A

19

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B

31

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C

33

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D

34

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E

None of the above

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Solution

The correct option is C 33

Total number of boys in the row 22 +12 - 1 = 33

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