exam Maths Puzzle Numerical Ability

3 to the (A) power = 800, what is (A)

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exam Other Question

A card is selected from a deck of 52 playing cards. Find the probability of selecting
a) a diamond given the card is black
b) a queen given the card is a picture card. find the x intercept for -x2+7x-11
it is x square

and x intercept for -x2 -2x-1
this is also x square