exam Maths Puzzle Numerical Ability

How many integers in the set of all integers from 1 to 100, unclusive, are not the square of an integer?

(A) 19
(B) 50
(C) 81
(D) 89
(E) 90

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exam Other Question

i need help asap on these 3 word problems, please help me by tonight. here's what the problems say.

#1
Business: for excercises "a" and "b", use the following information.
nic Hello,

I need help with this:

If y varies directly as x and y = 25 when x = 10, find y when x = 4.

Thank you