exam Maths Puzzle Numerical Ability

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8(1+1/2)^2 +22(1+1/t)+15=0
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exam Other Question

what was the MSRP for a Hummer H1 that sold for $107,272 after an 8% discount? Let A be the set of all composites less than 10, and B be the set of positive even integers less than 10. How many different sums of the form a + b are possible if a is in A and b is in B?