Experts please correct me where I'm wrong,

From statement 1:P(W&E)=0 we get P(W).P(E)=0
When we use this information combined with statement 2 we can conclude P(E)=0
There for P(W)=0.2

Therefore answer should be P(W)+P(E)-P(W&E)=0.2+0+0 and henceforth C.

Expert solutions!!!

Probability-Tossing coins

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Thanks Rich.

It was an stupid error.

Value of integer n

Q 67.What is the value of integer n?
1) n(n+1) = 6
2) 2^2n = 16

Thanks Mitch, excellent explanation.

If equation would have been
|7-x| + |3-x| = 2

Then we have no solution.Right?