Evaluate , when n = 15 and r = 12.
Given : n = 15 and r = 12
To Find : Value of at given n and r
Formula :
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Let ,
Substituting n = 15 and r = 12 in above equation,
By using above formula,
Cancelling (12!) from numerator & denominator,
∴x = 455
Conclusion : Value of at n = 15 and r = 12 is 6.