What is the formula for the n th term of an A.P.?
a + (3n-1)d
a + (n-1)d
a + (n+1)d
2a + (n-1)d
nth term of an AP whose first term is 'a' and the common difference is d is given by " a + (n-1)d ".
The formula to find out the nth term of an AP is
If m times the mth term of an AP is equal to n times its nth term, show that the (m+n)th term of the AP is zero.