Cbse class 10 Real numbers

The product of a rational and irrational number is

• rational

• irrational

• both of above

• none of above

The sum of a rational and irrational number is

• rational

• irrational

• both of above

• none of above

The product of two different irrational numbers is always

• rational

• irrational

• both of above

• none of above

The sum of two irrational numbers is always

• irrational

• rational

• rational or irrational

• one

LCM of 3 and 5 is

• 50

• 15

• 3

• 5

Real numbers is denoted by

• N

• W

• R

• Z

HCF of 2 and 4 is

• 8

• 4

• 2

• 10

LCM of 5 and 10 is

• 20

• 50

• 5

• 10