For Class 8, 9 & 10

Foundation - a strong base in Physics, Chemistry, Maths & Biology

Concept-first questions with clear model answers across all four subjects, aligned to NCERT. Start early, build the habit, and walk into your board exams, NEET and JEE already ahead.

Showing 1 question in Mathematics for Class 10. Tap a card to reveal the answer.

MathematicsProbabilityeasy

One card is drawn at random from a well-shuffled deck of 52 playing cards. What is the probability that it is a king?

Reveal answer ↓

What it is

Probability = favourable outcomes / total outcomes, always a number between 0 and 1.

Answer

There are 4 kings in a deck of 52 cards. Probability = number of favourable outcomes / total outcomes = 4/52 = 1/13.

P(event) = favourable outcomes / total outcomes

  • 4 kings in 52 cards
  • P = favourable/total = 4/52
  • = 1/13

Why learn this

It powers weather forecasts, insurance, games, medical trials and AI.

💡 Memory trick

Favourable over Total: 4 kings out of 52 -> 4/52 = 1/13.