Home
Class 7
MATHS
The mean of 2, 12, x, 15, 20, and 17 is ...

The mean of 2, 12, x, 15, 20, and 17 is 16, then find the value of x .
The following steps are involved in solving the above problem. Arrange them in sequential order.
`(A) 16=2+12+x+15,20+17/6`
(B ) 96=66+x
( c)`rArr x=96-66=30`
(D) We have,arithmetic mean
`="The sum of observations "/"Total number of observatons "`

A

ADBC

B

DABC

C

CABD

D

DBAC

Text Solution

Verified by Experts

The correct Answer is:
B

DABC is the required sequenial order
Hence , the correct option is (d)
Promotional Banner

Similar Questions

Explore conceptually related problems

If the mean of 20, 18 ,13 ,12, x and 10 is 15, then find the value of x.

The mean of 12, 10, x, 20 and 18, is 17. Find x

The mean of 36 observations is 22.If one observation 22 is deleted ,then find the new mean The following steps are involved in solving the above problem .Arrange then in sequential order . therefore New arithmetic mean =770/35 = 22 ( B) Arithemetic mean ="The sum of the observations "/"Total number of the observations" rArr 22 ="The sum of the observations "/36 ( C) The sum of the observations 22 is deleted , the new sum = 792 -22 = 770 and the number of observations is 36 -1 ,i.e 35,.

The mean of the numebrs 1,4,9, X ,12,14,15 and 16 is 10. Find the value of X

If the compound ratio of 9:x and (x+1):15 is 4:5, then find the ratio of x and (x+9). The followig are the steps involved in slving the above problem. Arrange them in sequential order. ltBrgt (A) (9x+9)5=4(15x) (B) 9(x+1):15x=4:5 (C) x:(x+9)=1:4 (D) 15x=45impliesx=3