13. Two dice are thrown simultaneously. Find the probability of obtaining a total score 5.
OR
A die is thrown once What is the probability of getting a number greater than 4
14. Find the class mark of classes 10-25 and 35-55.
OR
Find the value of r, if the mode of the following data is 25
15.20.25. 18. 14.15, 25, 13. 18.10.20.25.20…18
15. Find the valuc of p if the lines represented by the equations 3x-y-5=0 and
6x-2y-p = 0 are parallel
Answer:
13. 4/36= 1/9
OR
2/6= 1/3
14. Class mark of 10-25
(10+25)/2=
= 35/2
= 17.5
Class mark of 35-55
(35+55)/2
= 45
OR
The frequency table of the given data is as given below:
Value (xi ): 14 15 16 18 20 25 x
Frequency (f i ): 1 3 1 3 3 3 1
It is given that the mode of the given data is 25. So, it must have the maximum frequency. That is possible only when x=25.
Hence. x=25.
I hope it’s helpful for you ✌️