exam
Maths Puzzle
Numerical Ability
How many numbers between 100 and 200 (Inclusive) have an even number of factors?
Is there a formula for figuring this out or some sort of pattern? Thankyou
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exam Other Question
An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?
So far I have done this just subtracted.
800-128=672
please show me how to work these problems using the substitution method:
1/2x+1/3y=3
y=3x