Q3 of 17 Page 181

Give an example of two different irrational numbers whose product is a rational number.

8√2 and √2

are two different irrational numbers.


Product of the two = 8√2 × √2


= 8 × (√2 × √2)


= 8 × 2 = 16


16 is a rational number.


More from this chapter

All 17 →
1

Using the common form of rational numbers, prove that the sum, difference, product and quotient of any two rational numbers is again a rational number.

 2

Prove that the product of any irrational number and non-zero rational number is an irrational number.

 1

Find the distance between the two points on the number line, denoted by each pair of numbers given below:

i) 1, –5



2

Find the midpoint of each pair of points in the first problem.