The mean of5 numbers is 20. If one number is excluded their mean is 15. Then the excluded number is O a. 20 O b. 40 Oc. Ос. 5 O d. 10

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.6: Counting Principles
Problem 8ECP: In how many different ways can two letters be chosen from the letters A, B, C, D, E, F, and G? (The...
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The mean of 5 numbers is 20. If one number is excluded their mean is
15. Then the excluded number is
O a.
20
Ob.
O b. 40
О с. 5
O d. 10
Transcribed Image Text:The mean of 5 numbers is 20. If one number is excluded their mean is 15. Then the excluded number is O a. 20 Ob. O b. 40 О с. 5 O d. 10
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