Question

the 15th term of an A.P is 3 more than twice its 7th term. if the 10th term of the Ap is is 41,find it's nth term

Answer 1

The nth term is 4(n+1).

Step-by-step explanation:

• a+14 d = 2(a+6 d)+3

a-2d+3=0 -------(1)

Now

a+9 d=41 ------(2)

• Subtracting equation (1) from equation (2)  

11 d=44

d=4

• Hence from equation (2)

a = 5

Hence nth term = 5+ (n-1) x 4  =4 n+1

Thus the nth term is 4 n+1.

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Find the first 24 terms of the list of number whose nth term is given by An=3+2n  ?

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