exam
Maths Puzzle
Numerical Ability
solve by grouping
x^5 + 4x^3 + 7x^2 + 28
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exam Other Question
What quantity of 70 per cent acid solution must be mixed with a 20 percent solution to produce 700 mL of a 50 per cent solution?
Find a25 for thearitmetic sequence 1/2,1/5,-1,10,...