DECIMAL FRACTIONS (CDS)

Total Questions: 8

1. Simplify the question [2019 (I) Morning Shift ]

Correct Answer: (a)
Solution:


2. Simplify the question [2018 (I) Morning Shift ]

Correct Answer: (c) 0.1
Solution:

3. Which one of the following decimal numbers is a rational number with denominator 37? [2018 (I) Morning Shift ]

Correct Answer: (a) 0.459459459…
Solution:Checking the options, we get

4. Simplify the question [2017 (II) Evening Shift ]

Correct Answer: (b)
Solution:

5. Which one among the following is the largest? [2017 (I) Morning Shift ]

Correct Answer: (b)
Solution:

6. Which one of the following rational numbers has non-terminating and repeating decimal expansion? [2016 (II) Evening Shift ]

Correct Answer: (d)
Solution:


7. Simplify the question [2015 (II) Evening Shift ]

Correct Answer: (c)
Solution:

8. Let p be a prime number other than 2 or 5. One would like to express the vulgar fraction 1/p in the form of a recurring decimal. Then, the decimal will be [2015 (I) Morning Shift ]

Correct Answer: (c) a pure recurring decimal and its period will be some factor of (p −1)
Solution:Value of p may be 3, 7, 11, 13.