the mean of 6 numbers is 20 if one number is deleted the mean is 15 find deleted numbers
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Answered by
28
Answer:
- Question⇒ The mean of 6 numbers is 20 if one number is deleted the mean is 15 find deleted numbers?
Step-by-step explanation:
- Solution: in the first context, average = 20 and number of items are 6.
- Hence the required sum = average x number of times = 20 x 6 = 120.
- Similarly, when one number is removed, required sum will be 15 x 5 = 75.
- The difference between the two sums obtained will be the number removed =120-75=45.
Answered by
7
Answer:
45
Step-by-step explanation:
Mean of 6 numbers=20
Sum of 6 numbers= 120.
New mean=15.
Sum of 5 numbers =75.
Deleted number =120−75
=45
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