Questions 1
Five different books (A, B, C, D and E) are to be arranged on a shelf. Books C and D are to be arranged first and second starting from the right of the shelf. The number of different orders in which books A, B and E may be arranged is
A. 5!
B. 3!
C. 2!
D. 3! * 2!
Questions 2
The mean of a data set is equal to 10 and its standard deviation is equal to 1. If we add 5 to each data value, then the mean and standard deviation become
A. mean = 15 , standard deviation = 6
B. mean = 10 , standard deviation = 6
C. mean = 15 , standard deviation = 1
D. mean = 10 , standard deviation = 1
Answers
Answered by
2
Answer:
15b, 16c
Plz mark it as brainliest
Answered by
1
Answer:
15b, 16c
Plz mark it as brainliest
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