exam
Maths Puzzle
Numerical Ability
Luis and Julia have the same number of coins. Luis has only dimes and Julia has only quarters. If Julia has $1.80 more than Luis does, how many coins does each have?
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exam Other Question
Verify the identity.
a)(csc(-t)-sin(-t))/(sin(-t))=cot^(2)t
b)ln cotx= -ln tanx
1/3y^2-10y+3=6y/9y^2-1+2/1-3y