Question

the 20th term of the series 2 x 4 + 4 x 6 + 6 x 8 to infinity will be

Answer 1

Answer:

40 x 42

Step-by-step explanation:

We can write the terms as

2n x 2n+2

So the 20th term would be

(2 x20)x((2 x 20)+2)

Which would be 40 x 42 = 168

S