A. 2/3 B. 15/10 C. 15% D. 0.7

Answer: (B) 15/10 For any event A, 0 ≤ P(A) ≤ 1. Here 2/3, 0.7 and 15% (= 0.15) all lie between 0 and 1, but 15/10 = 1.5 gt 1, so it cannot be a probability. Also remember that a negative number can never be a probability.

Chapter: Probability· Mathematics Part 1 (Algebra)

Asked in: March 2025 board paper; July 2024 board paper (options \(\dfrac{2}{3}\), 1.5, 15%, 0.7, answer 1.5); July 2025 board paper (options 0.6, 2.0, 0.15, 0.75, answer 2.0)Q.1 Which number cannot represent a probability?

A. \(\dfrac{2}{3}\)

B. \(\dfrac{15}{10}\)

C. 15%

D. 0.7

Doubtly Asked 29 Oct 2026 Practice test ssc 10th Save WhatsApp Report

1 answer

Best answer

Answer: (B) \(\dfrac{15}{10}\)

For any event A, \(0 \le P(A) \le 1\). Here \(\dfrac{2}{3}\), 0.7 and 15% (= 0.15) all lie between 0 and 1, but \(\dfrac{15}{10} = 1.5 \gt 1\), so it cannot be a probability. Also remember that a negative number can never be a probability.

Doubtly AI · 29 Oct 2026 AI-verified · Nov 2026 Report

Was this answer helpful?

Asked in: March 2025 board paper; July 2024 board paper (options \(\dfrac{2}{3}\), 1.5, 15%, 0.7, answer 1.5); July 2025 board paper (options 0.6, 2.0, 0.15, 0.75, answer 2.0)Q.1 Which number cannot represent a probability?

1 answer

Your answer