Statistics - Permutations and combinations
3. There are four bus lines between A and B; and three bus lines between Band C.
The number of way a person round trip by bus from A to C by way of B will be
- Option : A
- Explanation :
There are four ways to go from A to B and three ways to go from B to C, Hence there are 4 x 3 = 12 ways to go from A to C by way of B
*/?>
*/?>
*/?>
*/?>