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Topic Question Set

Q 1 :    

What is the decimal expansion of 13 ?

  • 0.33

     

  • 0.3333

     

  • 0.333

     

  • 0.3334

     

(2)       0.3333...

(Non-terminating, repeating decimal)

 

Q 2 :    

The sum of a rational and an irrational number is always:

  • Rational

     

  • Irrational

     

  • Integer

     

  • Natural

     

(2)      Irrational

 

Q 3 :    

Which of the following statements is true?

  • Every whole number is a natural number.

     

  • Every integer is a whole number.

     

  • Every rational number is an integer.

     

  • Every integer is a rational number.

     

(4)         Every integer is a rational number.

 

Q 4 :    

The square root of which number is NOT a rational number?

  • 16

     

  • 25

     

  • 4

     

  • 7

     

(4)   

7 (as 7 is irrational)

 

Q 5 :    

Which of the following is a terminating decimal?

  • 13

     

  • 78

     

  • 57

     

  • 16

     

(2)

78 (Denominator has only 2 and 5 as prime factors, so it terminates)