exam Maths Puzzle Numerical Ability

Solve the equation. Be sure to check your solutions.
√x + 4 =3

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exam Other Question

A drawer contains red socks, black socks, and white socks. What is the least number of socks that must be taken out of the drawer to be sure of having 7 matching pair of socks?

a.9
b.14
c.16
d.17 How many ways can 4 people be chosen from a group of 9? Tell wheater the situation is permutation or combination