11)The width of the class in the distribution having class intervals 1-20, 21-40, 41-60 is
12)The arithmetic mean of the following data is
13)If mean = 44 and median = 42, then mode =
14)Which of the following is more consistent?
15)If x= 
then
C) x2 -x -3 = 0
Explanation:x =
⇒ X =
(x)2 = (√3+x)2 ⇒ x2 = 3+x
x2 – x – 3 = 0
then
View Answer
C) x2 -x -3 = 0
Explanation:x =
⇒ X =
(x)2 = (√3+x)2 ⇒ x2 = 3+x
x2 – x – 3 = 0
16)log10125 + log108 =
17)The relation a(b + c) = ab + ac is
18)If n is a natural number, then 8n – 3n is always divisible by
19)If √x = 31, then x =
= 31, then x =
20)If A and B are two sets then
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