book Maths Puzzle Numerical Ability

I have a question.... how do I simplify the square root of 40?

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book Other Question

This year the sales for homegrown video are 35 % higher than last year. This year the sales are $ 182.250. What were the sales last year i thought it was 4/14 but i was wrong...Which of the following is not a fractional representation for 2/7..




6/21

4/14


8/18


4/21