Find the odd one out of the following and give reason.
a. 4/3 × 3/4
b. -3/2 × -2/3
c. 2 × 1/2
d. -1/3 × 3/1

Solution:

Consider

a. 4/3 × 3/4

We know that

Product of rational numbers = Product of numerators/ Product of denominators

= (4 × 3)/ (3 × 4)

= 12/12

= 1

b. -3/2 × -2/3

= (-3 × -2)/ (2 × 3)

= 6/6

= 1

c. 2 × 1/2

= (2 × 1)/ 2

= 2/2

= 1

d. -1/3 × 3/1

= (-1 × 3)/ (3 × 1)

= -3/3

= -1

Therefore, the odd one out is option d.

✦ Try This: A body floats 3/5 of its volume above the surface. What is the ratio of the body submerged volume to its exposed volume? Re-write it as a rational number.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 9

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NCERT Exemplar Class 7 Maths Chapter 8 Problem 106

Find the odd one out of the following and give reason. a. 4/3 × 3/4, b. -3/2 × -2/3, c. 2 × 1/2, d. -1/3 × 3/1

Summary:

The odd one out among the following is option d

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