exam Maths Puzzle Numerical Ability

Why is it called algebra?

Why is algebra useful?

What does an algebra problem look like?

How are algebra problems different?

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exam Other Question

heres the question: An ant crawls the height of a tennis ball can that has exactly enough space to contain 3 tennis balls. Another ant crawls around the lip of the can. Which one covers a longer distance? In triangle CDE, CD=3y, DE=30, and CE=45. Determine the range possible values for y

I think the answer is 5