exam Maths Puzzle Numerical Ability

Use Property 1 to simplify the following radical expressions. Assume that all variables represent positive real numbers
sqrt(50)

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exam Other Question

A rhombus has sides of length 7 cm. One of its diagonals is 10 cm long. Find the lengths of the other diagonal. A quality control inspector found flaws in 13 out of 150 sweaters.

Here is the question: Find the probability that a sweater has a flaw. How many will not have flaws.

Whoever solves this thanks!!!!