exam Maths Puzzle Numerical Ability

If seven coins are tossed, in how many ways can they fall?

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exam Other Question

Find the probability of getting A full house in poker consists of three of a kind, in a five card hand, if 5 cards are dealt at random from a standard deck of 52. Could someone be so kind in helping me with this problem?

I need to solve the following systems by substitution:

4x - 12y = 5
-x + 3y = -1

Thanks so much,
Ashley