Subject :IMO Class : Class 7
The value of 
(A) 10-2
(B) 10-1
(C) 10
(D) None of these
Ans 1:
Class : Class 10
Ans 2:
Class : Class 7
I think that the given answer is wrong.The answer is 1.
Ans 3:
Class : Class 9
the answer is option A 10 power -2
Ans 4:
Class : Class 10
The answr should be 1