exam
Maths Puzzle
Numerical Ability
How many four-element subsets containing two vowels and two consonants can be formed from the set {a, b, c, d, e, f, g, h, i}?
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exam Other Question
x-2y=8
3x-2y=12
hey. i'm having a lot of trouble with this question. if you could help me that would be great. thanks.
here it is;;
The high-school yearbook staff is deciding how many co