Subject :ICSO Class : Class 3
I am a device like a mouse. Instead of having a ball at the bottom, I have a ball at the top.
A 
B 
C 
D 
Ans 1:
Class : Class 5
B
Ans 2:
Class : Class 5
my answer is B
Ans 3:
Class : Class 3
B.Trackball
Ans 4:
Class : Class 4
C
Ans 5:
Class : Class 5
my answer is B
Ans 6:
Class : Class 6
My answer is B
Ans 7:
Class : Class 7
trackball
Ans 8:
Class : Class 4
b
Ans 9:
Class : Class 7
B. Trackball
Ans 10:
Class : Class 5
B