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Probability interview questions

30 Probability questions from the Aptitude bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. A bag has 3 red, 3 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.36
  2. B.0.50
  3. C.0.57
  4. D.0.43

Answer + AI explanation with a free account

2. A bag has 4 red, 4 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.44
  2. B.0.58
  3. C.0.51
  4. D.0.37

Answer + AI explanation with a free account

3. A bag has 6 red, 2 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.74
  2. B.0.67
  3. C.0.60
  4. D.0.81

Answer + AI explanation with a free account

4. A bag has 2 red, 5 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.29
  2. B.0.36
  3. C.0.15
  4. D.0.22

Answer + AI explanation with a free account

5. A bag has 5 red, 4 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.57
  2. B.0.50
  3. C.0.64
  4. D.0.43

Answer + AI explanation with a free account

6. A bag has 2 red, 5 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.20
  2. B.0.34
  3. C.0.13
  4. D.0.27

Answer + AI explanation with a free account

7. A bag has 6 red, 2 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.62
  2. B.0.48
  3. C.0.69
  4. D.0.55

Answer + AI explanation with a free account

8. A bag has 5 red, 6 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.31
  2. B.0.52
  3. C.0.45
  4. D.0.38

Answer + AI explanation with a free account

9. A bag has 5 red, 2 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.43
  2. B.0.50
  3. C.0.64
  4. D.0.57

Answer + AI explanation with a free account

10. A bag has 5 red, 3 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.49
  2. B.0.56
  3. C.0.35
  4. D.0.42

Answer + AI explanation with a free account

11. A bag has 6 red, 5 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.33
  2. B.0.54
  3. C.0.47
  4. D.0.40

Answer + AI explanation with a free account

12. A bag has 4 red, 4 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.26
  2. B.0.33
  3. C.0.47
  4. D.0.40

Answer + AI explanation with a free account

13. A bag has 6 red, 6 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.39
  2. B.0.46
  3. C.0.53
  4. D.0.60

Answer + AI explanation with a free account

14. A bag has 3 red, 5 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.20
  2. B.0.27
  3. C.0.41
  4. D.0.34

Answer + AI explanation with a free account

15. A bag has 5 red, 2 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.70
  2. B.0.56
  3. C.0.63
  4. D.0.49

Answer + AI explanation with a free account

16. A bag has 4 red, 5 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.40
  2. B.0.54
  3. C.0.47
  4. D.0.33

Answer + AI explanation with a free account

17. A bag has 2 red, 3 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.32
  2. B.0.39
  3. C.0.18
  4. D.0.25

Answer + AI explanation with a free account

18. A bag has 6 red, 4 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.43
  2. B.0.57
  3. C.0.50
  4. D.0.36

Answer + AI explanation with a free account

19. A bag has 5 red, 4 blue and 3 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.56
  2. B.0.49
  3. C.0.35
  4. D.0.42

Answer + AI explanation with a free account

20. A bag has 3 red, 6 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.37
  2. B.0.23
  3. C.0.30
  4. D.0.44

Answer + AI explanation with a free account

21. A bag has 5 red, 5 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.49
  2. B.0.56
  3. C.0.42
  4. D.0.35

Answer + AI explanation with a free account

22. A bag has 2 red, 6 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.13
  2. B.0.27
  3. C.0.20
  4. D.0.34

Answer + AI explanation with a free account

23. A bag has 3 red, 5 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.37
  2. B.0.44
  3. C.0.23
  4. D.0.30

Answer + AI explanation with a free account

24. A bag has 5 red, 2 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.63
  2. B.0.70
  3. C.0.77
  4. D.0.56

Answer + AI explanation with a free account

25. A bag has 3 red, 2 blue and 1 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.50
  2. B.0.57
  3. C.0.43
  4. D.0.64

Answer + AI explanation with a free account

26. A bag has 2 red, 3 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.29
  2. B.0.36
  3. C.0.22
  4. D.0.15

Answer + AI explanation with a free account

27. A bag has 4 red, 3 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.36
  2. B.0.29
  3. C.0.43
  4. D.0.50

Answer + AI explanation with a free account

28. A bag has 6 red, 5 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.46
  2. B.0.60
  3. C.0.53
  4. D.0.39

Answer + AI explanation with a free account

29. A bag has 5 red, 6 blue and 4 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.26
  2. B.0.40
  3. C.0.33
  4. D.0.47

Answer + AI explanation with a free account

30. A bag has 5 red, 3 blue and 2 green balls. One ball is drawn at random. What is the probability it is red (as a decimal)?

Senior
  1. A.0.50
  2. B.0.43
  3. C.0.64
  4. D.0.57

Answer + AI explanation with a free account

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