Grade 12th passAlgebra
if 2nC3 : nC2= 12 : 1 then what will be the value of n? pls give answer with solution
if 2nC3 : nC2= 12 : 1 then what will be the value of n? pls give answer with solution
1 Answer
imran
2nC3/nC2 = 12/1
((2n)!/3!*(2n-3)! ) / n!*2!(n-2)! =12
(2(2n-1)(2n-2) )/3(n-1) =12
4(2n-1) =36
2n =10
There fore n=5
Other Related Questions on algebra
How do you write “the product of 18 and q” as an algebraic expression?
How do you write “the product of 18 and q” as an algebraic expression?
algebra
Last Activity: 2 Years ago