Question 1
Which of the following will not represent zero:
(a) 0×0
(b) 1+0
(c) 02
(d) 10−102
Let us try each option and calculate to see if they do not represent zero. This way we can eliminate each option one by one.
Option (a): 0×0 = 0. As zero multiplied with anything gives zero. So this option represents zero and hence not the correct choice.
Option (b): [1+0=1]. The number 0 is the additive identity, as any number added to zero yields the number itself.
Therefore option (a) does not represent zero.
The remaining options all represent zero.