Question

6 )which term of A.P. 2,4,6... is 20
a)9
b)10
c)11
d)12
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Answer 1

Answer:

let nth term of AP is 20

an=a+(n-1)d

20=2+(n-1)2

20=2+2n-2

2n=20

n=10

hence,10th term of AP is 20

Answer 2

Answer:

b-10

Step-by-step explanation:

2,4,6,8,10,12,14,16,18,20

Therefore,the 10 th of AP is 20