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Out of 7 tickets consecutively numbered ...

Out of 7 tickets consecutively numbered 3 are drawn at random. The probability for the numbers on the tickets to be in A.P. is

A

`(9)/(35)`

B

`(""^(5)C_(3))/(""^(7)C_(3))`

C

`(10)/(35)`

D

`(2)/(5)`

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The correct Answer is:
A
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