exam Maths Puzzle Numerical Ability

Simplify.
(2+(1/7))/(2-(1/2))

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exam Other Question

Assume the following statements:
P= The temperature is 70 degrees
Q= It is Raining
R= There is no wind

Find the following statement in word form: Q --> (~R upside down v ~P)
find two imaginary numbers in the form a + bi whose product = 17. Neither a nor b may equal zero.

Has me stumped. Any help is appreciated.