(a) Compute the sum S1 = 1 + 2 + 3 + . . . + 9999 (the sum of all integers from 1 to 9999). Do not use a program.
(b) Compute the sum S2 = 1+3+5+...+9999 (the sum of all odd integers from 1 to 9999). Do not use a program.
(c) A group of 50 persons need to form a committee of 3 persons. How many such committees are possible?
(d) Let Cn be the number of committees of 3 persons selected from a group of n persons. Is the estimation Cn = o(n2) correct? Justify your answer.
NEED to compute this question please COMPUTE all A to D