exam Maths Puzzle Numerical Ability

Is (√x^2)= x an identity (true for all nonnegative values of x)?

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exam Other Question

Five pencils and three erasers cost 65 cents. Three pencils and two erasers cost 40 cents. Find the cost of one pencil and one eraser. a clown is preparing for a party by inflating 1 balloon for each invited guest. When she has half of the needed balloons 3 of them pop. She inflates 5 more balloons and 2 pop Then