The mean of the median, mode and range of the observations 6, 6, 9, 14, 8, 9, 9, 8 is
10.3
8.5
10.5
8.8
In order to help the students with difficulties in remembering the geometrical terms and their meaning, a teacher must
test students on definition of geometrical terms
encourage group discussions
stress on rote memorisation of all terms and definitions
use lots of activities like preparing or solving crossword puzzles, jigsaw puzzles, etc
According to the given graph, between which two consecutive months was the change in the auto sales the greatest?
April-May
May-June
January-February
February-March
Two positive numbers x and y are inversely proportional. If x increases by 10%, then y decreases by
%
%
10%
%
The least number which is a perfect square and is also divisible by 10, 12, 15 and 18 is
1600
900
3600
2500
In the figure, ABC is an isosceles triangle with CA = CB and BC is produced to a point D. If CEBC, such that , then measure of ACD is
135°
140°
110°
120°
D.
120°
Let A=xo, then =xo and =yo
Now in right-angled ,
D+E+DCE=180o
++DCE=180o
+ x + 90o=180o
=180o-90o
x=
x=60o
ACB=60o
Now,ACD=180o-ACB
=180o-60o=120o
The diameter of a cylindrical jar is increased by 25%. By what per cent must the height of the jar be decreased so that there is no change in its volume?
36
54
10
25