The average of a certain number of observations is
40. When two observations 27 and 42 are replaced
with 84 and 36, the average is increased by 3. Find
the number of observations:
(1) 25
(2) 21
(3) 10
(4) 17
(5) 35
Answers
Answered by
9
Answer:
1
Step-by-step explanation:
40+42+..........….........………
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