Maths -9 chapter 1 Number System

In between two rational number there is/are:

• Exactly one rational number

• Infinitely many rational number

• Many irrational numbers

• Only irrational numbers

The product of a rational and an irrational numbers is:

• Always an integer

• Always a rational number

• Always an irrational number

• Sometimes rational and sometimes irrational

The decimal expansion of an irrational number may be:

• Terminating

• Recurring

• Either terminating or non- terminating

• Non-terminating and non-recurring

A rational number between √2 and √3:

• 1.9

• (√2. √3)/2

• 1.5

• 1.8

Which of the following is irrational?

• √9

• √64

• √5

• √81

4√5 + 5√5 is equal to:

• 9√5

• 9√10

• 5√10

• 7√5

Which of the following is irrational?

• 0.4014001400014…

• 0.14

• All of the above

• None of the above

√12 X √15 is equal to:

• 5√6

• 6√5

• 10√5

• √25

What would be the denominator after rationalizing 7/(5√3 - 5√2)?

• 19

• 20

• 25

• None of the above

Value of (256)^0.16 X (256)^0.09 is:

• 4

• 16

• 64

• 256.25