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How many of these four numbers are NEGATIVE rational numbers?

Class 7Rational NumbersRational Numbers
  • A1
  • B2
  • C3
  • D4

Step-by-Step Solution

is POSITIVE (same sign top and bottom). is negative. is negative. , which is neither positive nor negative. So exactly 2 qualify. Counting as negative just because minus signs are visible, or counting 0 as negative, is what pushes students to 3 or 4.
Answer: B) 2

Key idea: Recognising rationals

If you can write a number as **integer over non-zero integer**, it is rational. So:

- All integers are rational: 5 = 5/1, 0 = 0/1, −9 = −9/1.
- All fractions with integer numerator and denominator are rational: 3/4, −2/7, 11/3.
- Any decimal that terminates or repeats is rational: 0.25 = 1/4, 0.333… = 1/3.

Numbers that cannot be written as p/q (like √2 or π) are NOT rational — they're irrational. You'll meet those in Class 9.

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