Same chapter2 marksDifficulty: Easy
Solve 3x − 5 < 7 where x is a natural number, and write the solution set.
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2 marksDifficulty: Easy
Why does the inequality sign reverse when both sides of an inequation are divided by a negative number?
Original Khojo Papers practice question — not from a past board paper.
Answer
Multiplying or dividing by a negative number reflects both sides about zero on the number line, and reflection reverses their order: if a < b then −a > −b. So the statement stays true only if the sign is turned round at the same time.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
For example 2 < 5, but dividing by −1 gives −2 > −5.
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