PROGRAMS ARE WRITTEN IN PYTHON (PYTHON 2.7)

1 .How to find the missing number in given integer array of 1 to 100?

ANS: missing no.py

2 .Given a String of length N reverse the words in it. Words are separated by space without using any library method.

ANS: int2.py

3 .Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.

ANS: hedspn3.1.py 4 Find the sum of all the multiples of 4 or 5 below 1000.

ANS:hedspn4.1.py

5 Find the sum of all the primes below two million

ANS:primes.py