3 years ago

Pita has 12 coins in her bag.

Mathematics

1 answer:

Allushta [10]3 years ago

4 0

Answer:27/220

Step-by-step explanation:

She must have 2 �1 coins and 1 50p coin.

She can choose the 2 �1 coins 3C2 = 3 ways.

For each of those 3 ways she can choose the

50p coin 9C1 or 9 ways.

That's 3�9=27 ways to get �2.50.

She can choose any 3 coins in 12C3 = 220 ways.

The desired probability is 27 ways out of

220 ways,or 27/220, or 13.5% of the time.

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