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Rakesh,

First lets identify the number of branches in the code.. i think True and false are 2 branches.

As you said, P = 60 and Q = 50 checks only the True conditions of both the IF statements.This is only 50% coverage.

So what happens to false condition? that branch is not tested.
That is when P = 55, Q = 40 satisfies the false condition of both the If statements.

So, when P = 55, Q = 40 we can check if the system skips the PRINT statements thereby comlpeting the entire baranches (100% branch coverage!) So we need 2 test cases for branch coverage and one for statement coverage.

Is the explanation OK?? Any inputs?