5+15+45+....+5.3n-1 = 5/2(3n-1)
see if u look p(1)= 5/2(31-1) is not equal to 5
which implies the given statement is not true for 1..hence it cannot be true for other values of n also.
5+15+45+....+5.3n-1 = 5/2(3n-1)
see if u look p(1)= 5/2(31-1) is not equal to 5
which implies the given statement is not true for 1..hence it cannot be true for other values of n also.