exam
Maths Puzzle
Numerical Ability
I understand what to do when the signs are the same in this problem but what do I do if they differ? 89.3+(-14.4)
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exam Other Question
What is the probability that, of three people selected at random, at least two were born on the same day of the week?
I am really struggling with how to do this. Can someone please help? Thanks.
[xy^5 / x^-4 y^2]^-2