exam
Maths Puzzle
Numerical Ability
Describe the dimensions of a pyramid with a volume of 30 cm^3?
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exam Other Question
2x^2+13x+6
2k^2-7k+6
2x^2+7x-4
(i need the answers to these questions)^
I have a question regarding Orseme's geometric graphical model?
the sum of 1/2 + 2/4 + 3/8 + ... + n/2^n + ... = 2.
I can't figure out how to prove this.