$3$ numbers are chosen from first $15$ natural numbers, then probability that the numbers are in arithmetic progression
$3$ numbers are chosen from first $15$ natural numbers, then probability that the numbers are in arithmetic progression
- A
$\frac{2}{5}$
- B
$\frac{6}{{85}}$
- C
$\frac{{^{15}{C_2}}}{{^{15}{C_3}}}$
- D
$\frac{7}{{65}}$
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- [IIT 1979]
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