exam Maths Puzzle Numerical Ability

Solve the equation m-2n=9 if the domain is {-1, 0, 5}.

Help me please!!!

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exam Other Question

P(A) = 0.30
P(B) = 0.40
P(C) = 0.10
P(AorD) = 0.50
P(A and D ) = 0.04
P(A and C) = 0.03
P(B/A) = 0.60
Determine :
P(AandB)
P(A/B)
P(D)

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