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Number of ways in which 3 tickets can be...

Number of ways in which 3 tickets can be selected from a set of 500 tickets numbered 1,2,3..., 500 so that the number on them are in arithmetic progression is 500 (b) `^500 C_3` (c) 62250 (d) None of these

A

500

B

`.^(500)C_(3)`

C

`3996`

D

None of these

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A
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