Question

Mean of 4 numbers is 26.If one more number is included, then the new mean is 25.Then the included number is *
25
21
24
26​

Answer 1

Answer:

21

Step-by-step explanation:

mean of 4 number=26.sum of 4no.=26×4=104. If new no. is included, new mean=25. sum of new mean=25×5=125.included no.=125-104=21

Answer 2

Answer:

21 is the answer

Step-by-step explanation:

let the sum of 4 nos. be x

then 26=x/4

x=26×4=104

Now, after including one no.

let the new no. be y

then 25=104+y/5

25×5=104+y

125=104+y

y=125-104

y=21