NCERT Class 6 Solutions: Whole Numbers (Chapter 2) Exercise 2.3–Part 1
Q1 Which of the following will not represent zero:
Solution:

It does not represent zero.

It represents zero.

It represents zero.

It represents zero.
Q2 If the product of two whole numbers is zero, can we say that one or both of theme will be zero? Justify through examples.
Solution:

If the product of 2 whole numbers is zero, then one of them is definitely zero
For example,

If the product of 2 whole numbers is zero, then both of them may be zero
However,
(Since numbers to be multiplied are not equal to zero, the result of the product will also be nonzero.)
Q3 If the product of two whole numbers is 1, can we say that one of both of them will be 1? Justify through examples.
Solution:

If the product of 2 numbers is 1, then both the numbers have to be equal to 1.
For Example,

here Second number is 1 and its product with 15 is 15

here fist number is 1 and its product with 23 is 23

here both numbers are 1 and their product is 1


Hence if the product of two whole numbers is 1, we can say that one or both of them will be 1.