NCERT Class 6 Solutions: Whole Numbers (Chapter 2) Exercise 2.3–Part 1

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Q-1 Which of the following will not represent zero:

  1. 1+0

  2. 0×0

  3. 02

  4. 10102

Solution:

Given the any value multiply and divisible by zero and find the which choice is correct

Given the Any Value Multiply and Divisible by Zero

Given the any value multiply and divisible by zero and find the which choice is correct

  1. 1+0=1

    It does not represent zero.

  2. 0×0=0

    It represents zero.

  3. 02=0

    It represents zero.

  4. 10102=0

    It represents zero.

Q-2 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:

Given the all real numbers and define the product of two whole number is zero that time one or both of theme will be zero

Given the All Real Numbers

Given the all real numbers and define the product of two whole number is zero that time one or both of theme will be zero

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

    For example, 0×4=0and12×0=0

  • If the product of 2 whole numbers is zero, then both of them may be zero

    0×0=0

    However, 2×3=6

    (Since numbers to be multiplied are not equal to zero, the result of the product will also be non-zero.)

Q-3 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,

    • 15×1=15 here Second number is 1 and its product with 15 is 15

    • 1×25=25 here fist number is 1 and its product with 23 is 23

    • 1×1=1 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.

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