exam Maths Puzzle Numerical Ability

Question #1: Simplify: (2 root3 -4)squared

#2: Solve and check: root y+2 =4-y

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exam Other Question

A lottery pays the winner $1 on the first day, $2 on the next day, and so on, doubling the payment on each successive day.

a. What is the payment on the fifteenth day?
b. Find Evaluate. 2 x 2to the third power