How do you multiply two rational numbers?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Multiply the numerators together and the denominators together.
Formula: (a/b) × (c/d) = (a × c)/(b × d)
Example:
2/3 × 5/7 = (2 × 5)/(3 × 7) = 10/21With negatives:
(-3/4) × (2/5) = (-3 × 2)/(4 × 5) = -6/20 = -3/10Rule for signs:
- Positive × Positive = Positive
- Negative × Negative = Positive
- Positive × Negative = Negative
Suggested Q&A
General · Class 12- GeneralClass 12Electric Field at Centre of Ring with Non-Uniform Charge Distribution. Four quadrants carry linear charge densities: +2λ, −2λ, +λ, −λ. Find electric field at centre.
- GeneralClass 12P°(hexane) = 408 Torr, P°(heptane) = 141 Torr. x(hexane) = 0.300. Find Y₆ and Y₇.
- GeneralClass 122N₂O₅(g) → 4NO₂(g) + O₂(g). Initial P = 50 mmHg; P at 30 min = 87.5 mmHg. Find P at 60 min.
- GeneralClass 12What is the difference between psychosis and neurosis?
- GeneralClass 12What is the difference between prism and a pyramid?
- GeneralClass 12What is the difference between phrase and clause?