Vardaan Learning Institute
Previous Year Questions: Probability
Class: 10 (CBSE)
Subject: Mathematics
Chapter: 14
BOARD EXAM 2025 (Set 30/6/3)
Q17.
Two coins are tossed. Probability of at least one head is
(A) \(\frac{1}{4}\)
(B) \(\frac{1}{2}\)
(C) \(\frac{3}{4}\)
(D) 1
[1 Mark]
Q19.
Assertion:
\(E_1\): number < 3, \(E_2\): number> 3 are complementary.
Reason:
For complementary events, \(P(E) + P(F) = 1\).
(A) Both true, R explains A
(B) Both true, R doesn't explain A
(C) A true, R false
(D) A false, R true
[1 Mark]
Q24.
Balls numbered 2 to 91. Find P(2-digit number) and P(multiple of 1).
[2 Marks]