Question

the mean of 5 nos is 20. If one number is excluded, mean of remaining numbers is 23. Then exclude numbers is
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Answer 1

Answer:

Step-by-step explanation:

20 = x/5

20*5 = x

100 = x

the new mean after excluding a number = 23

23 = x/4(5-1=4)

4*23 = x

92 = x

100-92

= 8

8 is a number which was excluded

Answer 2

ANSWER...................,

The mean of 5 number = 20

The sum of 5 number = 5 × 20 = 100

If one number is excluded ,

Then mean of 4 number = 23

Sum of 4 number = 4 × 23 = 92

∴excluded number = 100 - 92 = 8