The positive value of |
|||
(a) |
|
(b) |
4 |
(c) |
|
(d) |
3 |
The positive value of |
|||
(a) |
|
(b) |
4 |
(c) |
|
(d) |
3 |
x2
x2
x2
∴r=2
Hence, 10C2=720
=16
=
Option (b)