Question

5, 10, 15, 20, ....61th term of this a.p is ​

Answer 1

a = 5

d = 10 - 5

= 5

n = 61

an = a + (n-1)d

= 5 + (61-1)5

= 5 + 60(5)

= 5 + 300

= 305

So, 305 is the 61th term of this AP.

Answer 2

Answer:

$\small\underline\bold\pink{Answer:}$

$a = 5 \\ a = 10 - 5 \\ = 5 \\ n = 61 \\ \\ an = a + (n - 1) \\ = 5 + (61 - 1)5 \\ = 5 + 60(5) \\ = 5 + 300 \\ = 305$