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Mathematics — CBSE Class 10 board question

Q1. [1]
A girl calculates that the probability of her winning the first prize in a lottery is 0.08. If 6000 tickets are sold, how many tickets has she bought ?
  1. A 40
  2. B 240
  3. C 480
  4. D 750
Previously asked in CBSE board exam
2023 30/1/1 Q17
Generated by claude-sonnet-4-6 · 2026-06-15 10:31 · grounding rag
Model Answer

Option C: 480

Number of tickets bought = P(winning) × Total tickets = 0.08 × 6000 = 480

Source: Chapter 14, Probability — A Theoretical Approach

Explanation

Use the formula: P(E) = (Favourable outcomes)/(Total outcomes). Here, favourable outcomes = tickets she bought, total outcomes = 6000. So, tickets bought = 0.08 × 6000 = 480. Watch out for option B (240) — a common error from using 0.04 instead of 0.08.

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