If the roots of the equation (b - c)x2 + (c - a)x + (a-b) = 0 are equal, then

If the roots of the equation (b - c)x2 + (c - a)x + (a-b) = 0 are equal, then

2) If the third term of an AP is 12 and the seventh term is 24, then the 10th term is

3) A number 15 is divided into three parts which are in AP and sum of their squares is 83. The smallest part is

4) Second term of sequence with general term n2 - 4/2 is

5) A.P whose nth term is 2n-1 is