MCQ practice · SSC General Mathematics Board questions · Chapter 1: Real Numbers
With respect to rational numbers: Which of the following is correct?
- i. √49 is an odd number
- ii. 0.21 is an improper fraction
- iii. 0 is an integer
Think it through first, then pick an option.
- a i and ii
- b i and iii
- c ii and iii
- d i, ii and iii
Answer and explanation
Correct answer: b i and iii
√49 = 7 is odd and 0 is an integer: i and iii are true, ii is false.
Why the other options are wrong
- a i and ii: ii is false: 0.21 = 21/100 has a smaller numerator, so it is not improper.
- c ii and iii: ii is false (0.21 is the value of a proper fraction), and i is left out though √49 = 7 is odd.
- d i, ii and iii: ii is false: 0.21 = 21/100 is not an improper fraction, so all three cannot be true.
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