exam Maths Puzzle Numerical Ability

WRITE A VERBAL EXPRESSION!

23F

5M^2+2

X^3/Y^4

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exam Other Question

A pool measures 20 feet by 30 feet. It is surrounded by a walkway which is same width around the rectangular pool. With the walkway, the area is 1500 square feet. What is the width of the walkway?
(a teacher generated question, not from textbook.) Assume that 420 members of the House are available to vote. How many votes are necessary to make up a majority, which is anything over ?