CBSE Class 10 Mathematics Question 16 of 29

Probability — Question Ex 15.1 Q15

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Ex 15.1 Q15
Question

Five cards – the ten, jack, queen, king and ace of diamonds, are well shuffled with their face downwards. One card is then picked up at random.
(i) What is the probability that the card is the queen?
(ii) If the queen is drawn and put aside, what is the probability that the second card picked up is
(a) an ace?
(b) a queen?

Answer

Ex 15.1 Class 10 Maths NCERT Solutions pdf download Q15

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CBSE Class 10 Probability — Complete Guide

Probability is an easy-to-score chapter worth 4-5 marks. Classical probability with coins, dice, cards, and bags.

Quick Revision: Key Concepts

  • P(E) = favourable / total outcomes
  • Complementary: P(E) + P(not E) = 1
  • Range: 0 ≤ P(E) ≤ 1
  • Cards: 52 total, 4 suits, 12 face cards, 26 red, 26 black

Most Important Questions

  1. Coin and dice probability problems
  2. Playing card probability (specific suit, face card, etc.)
  3. Balls in a bag problems
  4. Number/divisibility probability problems

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