18.A program to find the sum and average of the given numbers using the while loop. 19.A program to find the sum and average of the given numbers using a do-while loop. 20.A program to generate a...

18.A program to find the sum and average of the given numbers using the while loop.

19.A program to find the sum and average of the given numbers using a do-while loop.

20.A program to generate a fibonacci series of ‘n’ numbers, where n is defined by the programmer. (series should be: 0 1 1 2 3 5 8 13 21 34 and so on.)

21.A program to find the factorial of a given number using do-while loop.