Practice mode / Probability In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize? A Option A: 1/10 B Option B: 2/5 C Option C: 2/7 D Option D: 5/7 Correct answer C. 2/7 Show answer Report a problem How we write and check questions
Question 01 / Probability In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is: A Option A: 21/46 B Option B: 25/117 C Option C: 1/50 D Option D: 3/25 Correct answer A. 21/46 Show answer Open question
Question 02 / Probability Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even? A Option A: 1/2 B Option B: 3/4 C Option C: 3/8 D Option D: 5/16 Correct answer B. 3/4 Show answer Open question
Question 03 / Probability Three unbiased coins are tossed. What is the probability of getting at most two heads? A Option A: 3/4 B Option B: 1/4 C Option C: 3/8 D Option D: 7/8 Correct answer D. 7/8 Show answer Open question
Question 04 / Probability What is the probability of getting a sum 9 from two throws of a dice? A Option A: 1/6 B Option B: 1/8 C Option C: 1/9 D Option D: 1/12 Correct answer C. 1/9 Show answer Open question
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