exam
Maths Puzzle
Numerical Ability
Lake Superior is about 4 times the area of Lake Ontario.Lake Superior is 30,172mi^2.
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exam Other Question
how to prove that (1/2)*(3/4)*(5/6)*(7/8)*(9/10)*...(99/100)>=1/10
3x - y ≤ 6
x ≥ 1
y ≤ 3