questionr
Early access
Exams
Joint Entrance Examination
Mathematics
Statistics
Question 43
Question 43 of 208
Medium
NUMERICAL
Let
a
,
b
,
c
∈
N
a,b,c\in N
a
,
b
,
c
∈
N
and
a
<
b
<
c
a<b<c
a
<
b
<
c
. Let the mean, the mean deviation about the mean and the variance of the 5 observations
9
,
25
,
a
,
b
,
c
9,25,a,b,c
9
,
25
,
a
,
b
,
c
be 18, 4 and
136
5
\frac{136}{5}
5
136
, respectively. Then
2
a
+
b
−
c
2a+b-c
2
a
+
b
−
c
is equal to \_\_\_\_\_\_\_\_ Answer: 33
Check answer
Press A-D to select · Enter to check
Solutions · 1
Post your solution
Official solution
&
a
,
b
,
c
∈
N
&
a
\& a,b,c\in N \ \& a
&
a
,
b
,
c
∈
N
&
a
Answer the question to unlock
Previous
Next