Real Numbers

7×11×23

• 1550

• 1771

• 1245

• 1761

Every composite number can be expressed as a product of

• Even numbers

• Odd numbers

• Prime numbers

• None of these

HCF of 6,20

• 1

• 2

• 6

• 20

LCM of 12,15,21

• 320

• 450

• 420

• 15

√2is.......

• Rational number

• Composite number

• Irrational number

• None of these

The sum of a rational number is.......

• Rational

• Irrational

• Real

• None of these

Which number is an irrational number?

• 2.5
• 5.72314.....
• -17
• 1/2

Rational numbers are denoted by

• N

• W

• Z

• Q

If √p is rational, then 'p' must be

• Prime number

• Composite number

• Perfect square

• Odd number

Product of any two irrational numbers is always irrational

• True

• False