exam
Maths Puzzle
Numerical Ability
A girl has ten coins, all nickels and dimes, with a total value of 70 cents. Find the number of each kind of coin.
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Please help to :
Evaluate
a^2 - b^3(a - b) if a = 1/3 and b = - 1/2
Simplify.
a+1+3/a+5/a+1+3/a-1