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Out of 3-hard and 4-easy problems, 3 were selected. What is the possibility that 3 problems are hard?

Out of 3-hard and 4-easy problems, 3 were selected. What is the possibility that 3 problems are hard?
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Out of 3-hard and 4-easy problems, 3 were selected. What is the possibility that 3 problems are hard?

User Kevin Gale
by
8.2k points

2 Answers

5 votes

Answer:

probability = 3/7

Explanation:

hard problems = 3

easy problems = 4

total problems = 7

probability( hard problems) = 3/7

User Amit Prajapati
by
8.7k points
6 votes

Answer:

4'21bhwkeg 4y31q

Explanation:

User Makubex
by
8.7k points
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