exam Maths Puzzle Numerical Ability

Evaluate: (15-5)divided by [(12 divided by 2^2)-2]?

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exam Other Question

A debt of $3,000.00 due in 7 years and $2,000.00 due in 3 years is to be repaid by a single payment of $1,000.00 now and two equal payments which are due 1 year from now and 4 year Solve for x: 3^x = 4
Select an answer below
a.log 4/3
b.log 4/3
c.log 4-log 3
d.ln 4/ln 3

Solve for x: 9^x+2 = 27
Select an answer below
a.1
b.2/3
c.-1/2
d.-2