1.

A, B and C are 3 cities that form a triangle u0026 where every city is connected to every other one by at least one direct root. There are 33 routes direct u0026 indirect from A to C u0026 there are 23 routes from B to A. How many direct routes are there from A to C?

A. 15
B. 10
C. 20
D. 25
Answer» C. 20


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