which term of the a.p2,5,8....... is 56
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let the nth term of An is 56
a= 2 , d= 5-2= 3 , n=?
An=a+(n-1)d =
= 56 = 2+(n-1)3
= 56 = 2+ 3n-3
= 57 = 3n
n= 57/3 = 19
hence the 19th term of AP is 56