There are four bus lines between A and B; and three bus lines between Band C.
The number of way a person roundtrip by bus from A to C by way of B will be
| A. | 12 |
| B. | 48 |
| C. | 144 |
| D. | 264 |
Answer : 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
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