Maths Olympiad Prep

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Combinatorics Difficulty 1.1 Junior Find the answer Canada

A pentagon is divided into 5 equal sections, as shown.

Figure 0

An arrow is attached to the centre of the pentagon. The arrow is spun once. What is the probability that the arrow stops in the section numbered 4?

Pick one

Solution

Michael has 280in280 in 20 bills and so the number of 20billsthathehasis20 bills that he has is 280÷20=14$.280\div20=14\$.

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