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For a class, Mrs. Hawk brought in 7 different packages of colored pens. The teacher randomly selects 2 packages. How many different combinations are there?​

For a class, Mrs. Hawk brought in 7 different packages of colored pens. The teacher randomly selects 2 packages. How many different combinations are there?​
asked 2.9k views
1 vote
For a class, Mrs. Hawk brought

in 7 different packages of
colored pens. The teacher
randomly selects 2 packages.
How many different
combinations are there?​

asked
User Rodent
by
8.1k points

2 Answers

3 votes

Answer:

14

Explanation:

7x2=14

answered
User Suneel Kumar
by
7.7k points
2 votes
7C2 = 7!/[2!(7-2)!] = 7!/(2x5!) = 7x6/2 = 21
Therefore there are 21 possible combinations.
answered
User Stefan Wallin
by
9.1k points
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