Q1. [1] § Chapter Opening and Epigraph § 14.2 Summary
Meena calculates that the probability of her winning the first prize in a lottery is 0.08. If total 800 tickets were sold, the number of tickets bought by her, is
- (A) $64$
- (B) $640$
- (C) $100$
- (D) $10$
Previously asked in CBSE board exam
2026 30/5/1 Q16
Generated by claude-sonnet-4-6 · 2026-06-15 10:31 · grounding rag
Model Answer
(A) 64
Number of tickets bought by Meena = P(winning) × Total tickets = 0.08 × 800 = 64
Source: Chapter 14, Section 14.1
Explanation
Use the formula: P(E) = (Favourable outcomes)/(Total outcomes). Here, favourable outcomes = tickets bought by Meena, total outcomes = 800. So, tickets = 0.08 × 800 = 64. Don't confuse 0.08 with 0.8 (which gives 640, a common mistake).
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