Home
Class 11
MATHS
The mean of the numbers a, b, 8, 5, 1...

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b? (1) `a""=""0,""b""=""7` (2) `a""=""5,""b""=""2` (3) `a""=""1,""b""=""6` (4) `a""=""3,""b""=""4`

A

a=3,b=4

B

a=0,b=7

C

a=5,b=2

D

a=1,b=6

Text Solution

Verified by Experts

The correct Answer is:
A
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • STATISTICS

    MODERN PUBLICATION|Exercise Competition File|10 Videos

  • SETS

    MODERN PUBLICATION|Exercise CHAPTER TEST 1|12 Videos

  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise Chapter test|12 Videos

Similar Questions

Explore conceptually related problems

The mean of the numbers a,b,8,5 is 6 and the variance is 6.80. Then, which one of the following gives possible values of a and b?

The mean of the number a,b,8,5,10 is 6 and the variance is 6.80 . Then ab =

Knowledge Check

  • If the mean and the variance of the numbers a, b, 8, 5 and 10 are 6 and 6.8 respectively, then the value of a^(3)+b^(3) is equal to

    A
    58
    B
    61
    C
    91
    D
    89

  • If A=[{:(3,4),(5,6),(7,8):}] and B = [{:(3,5,7),(4,6,8):}] . Then which one of following is correct ?

    A
    B is the inverse of A
    B
    B is the adjoint of A
    C
    B is the transpose of A
    D
    None of the above

  • Find the mean of the values: 1,9,7,3,5,5,6,4,2,8, A. 3 B. 4 C. 5 D.6

    A
    D
    B
    C
    C
    B
    D
    A

    • Similar Questions

    Explore conceptually related problems

    The mean of numbers a,b,8,5,10 is 6 and their variance 6.80 ,then tan^(-1)((1)/(a))+tan^(-1)((1)/(b))=

    If A=[{:(3,4),(5,6),(7,8):}] and B =[{:(3,5,7),(4,6,8):}] , then Which one of the following is correct ?

    If the number A 3 6 4 0 5 4 8 9 8 1 2 7 0 6 4 4 B is divisible by 99 then the ordered pair of digits (A, B) is

    If A = ((1,2),(3,4)) , and B = ((5,6),(4,3)) , find the following A + B Are the answer to (b) and (c) the same

    if U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of (B - C)'.

    Home
    Profile