Question

ii) the 18th term of the AP V2, V18, V50, V98​

Answer 1

a = √2

d= √18 - √2

= 3√2 - √2

= 2√2

n = 18

an = a + ( n - 1 ) x d

= √2 + ( 18 - 1 ) x 2√2

= √2 + 17 x 2√2

= √2 + 34√2

= √2 ( 1 + 34 )

= 35√2

The 18th term of the A.P is 35√2