Question

5. Find whether

(i) 210 is a term of the AP; 2,6,10,…​

Answer 1

Answer:Hope it helps

a=2

d=a2-a1=6-2=4

an=210

an=a+(n-1)*d

210=2+(n-1)*4

210-2=(n-1)*4

208=(n-1)*4

208/4=n-1

52=n-1

52+1=n

53=n

it is a term of ap

a=2, d=4, an=210.

solution:

210=2+(n-1)4

208/4=n-1

52+1=n

n= 53.

therefore 210 is 53rd term of the given ap

Step-by-step explanation: