0+1+2+3+.....+49=?0 + 1 + 2 + 3 + ..... + 49=?0+1+2+3+.....+49=?
1 + 2 + 3 + 4 + ..... + 50 =?
Which of the following is a factor of the expression 52n−23n5^{2n}-2^{3n}52n−23n,where n is a natural number ?