exam Maths Puzzle Numerical Ability

The sum of a two-digit number and its reverse is 121. The ones digit is seven more than the tens digit.what is the number?

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exam Other Question

Find the Maturity value if Principle = $1400., Rate = 16%, Compounded quarterly over 6 yrs.

Please help,

Ellen the points (-2,-3),(2,-1) and (10,y) are all in a line (they are co-linear.) Find y.