What is the total number of ways to reach A to B in the network given?
Explanation:
To go from A to B, we need to pass through 3 levels of nodes.
Number of ways of goind from A to any of the level 1 node = 4 Number of ways of goind from any of the level 1 node to any of the level 2 node = 2 Number of ways of goind from any of the level 2 node to B = 2
Total number of ways to reach A to B = 4 × 2 × 2 × 1 = 16.
Hence, option (b).
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