Question

Write a program to find the product of following series :----
0 * 4 * 18 * 48 * 100 * 180 * ………… * nth term .

b. Write a program to find the sum of following series :
2 – 22 + 222 – 2222+ 22222 - ……………. Nth term

Answer 1

Answer:

1 ) 0,4,18,48,100,180...

1 = 1³-1² = 0

2 = 2³-2² = 4

3 = 3³-3² = 18

4 = 4³-4² = 48

5 = 5³-5² = 100

6 = 6³-6² = 180

like that

we have to find ninght term

that's why

we have to put 9 here

9 = 9³-9² = 648

2) 2-22+222-2222+22222- ...

first + then -

like that in every term

so

we have to find ninght term

2-22+222-2222+22222-222222+2222222-22222222+222222222

Explanation:

HOPE YOU UNDERSTAND