Question

There are four unkoum numbers the mean of the first two numbers is 4 and the mean of the first of the three is 9 the mean of all numbers is 15 if one of the four number is 2 find the other numbers
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Answer 1

Step-by-step explanation:

Let A,B,C,D be the numbers.

Given,

2

A+B

=4 ⟹A+B=8 ------(i)

Given,

3

A+B+C

=9 ⟹A+B+C=27 ------(ii)

8+C=27 -----from(i)

C=27−8=19

Given,

4

A+B+C+D

=15 ⟹A+B+C+D=60 ------(iii)

27+D=60 ------from(ii)

D=60−27=33

Given, one of the numbers, among A,B,C,D is 2. Let A=2.

From (i), A+B=8

⟹B=6

Hence the numbers are 2, 6, 19, 33

Answer 2

Answer:

Hence, The required no.are 2 , 6 , 19 and 33.

Step-by-step explanation:

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