book Maths Puzzle Numerical Ability

2x^2 + x -10/-12 + 8x – x^2



2x^2 + 3x -9/ divide x^2 + 10x +24/
2x^2 – 13x + 15 x^2 + x – 30



8x/4-x - 5x/x-4



Divide

4i/6 + 5i


2y√[27

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book Other Question

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

A chemist mixes 10% citric acid solution with a 50% acid solution to form 40ml of a 40% solution. How much of each solution should be used in the mixture?