Question

The _____ th term of the A.P. 13, 26, 39, 52, … is 650.

Answer 1

Answer:

50th term

d=13

a=13

an=650

an=a+(n-1)d

650=13+(n-1)13

637=(n-1)13

(n-1)=637/13

n-1=49

n=50

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Answer 2

Answer:

hence 48th term is 650

Step-by-step explanation:

let nth term is 650

a = 13

d = 26-13 = 13

an= 650

an = a + (n-1) × d

650 = 13 + (n-1) × 13

650-13 = (n-1) × 13

637 = (n-1) × 13

637/13 = (n-1)

49 = n-1

n = 49-1

n = 48