exam Maths Puzzle Numerical Ability

how yo draw √14 on a number line

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exam Other Question

A man has a choic of a white, yellow, or blue shirt. He also may select a red tie or a green tie. How many different outfits can he make of 1 shirt and 1 tie? I am trying to figure out how to understand what d equals in the following formula:

ts-tp=d/vs-d/vp

Any assitance would be great.

Thanks in advance,
Scott