Probability and Conditional Probability MCQ Quiz in मल्याळम - Objective Question with Answer for Probability and Conditional Probability - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

Last updated on Apr 3, 2025

നേടുക Probability and Conditional Probability ഉത്തരങ്ങളും വിശദമായ പരിഹാരങ്ങളുമുള്ള മൾട്ടിപ്പിൾ ചോയ്സ് ചോദ്യങ്ങൾ (MCQ ക്വിസ്). ഇവ സൗജന്യമായി ഡൗൺലോഡ് ചെയ്യുക Probability and Conditional Probability MCQ ക്വിസ് പിഡിഎഫ്, ബാങ്കിംഗ്, എസ്എസ്‌സി, റെയിൽവേ, യുപിഎസ്‌സി, സ്റ്റേറ്റ് പിഎസ്‌സി തുടങ്ങിയ നിങ്ങളുടെ വരാനിരിക്കുന്ന പരീക്ഷകൾക്കായി തയ്യാറെടുക്കുക

Latest Probability and Conditional Probability MCQ Objective Questions

Top Probability and Conditional Probability MCQ Objective Questions

Probability and Conditional Probability Question 1:

A jar contains 40 marbles: 10 red, 15 blue, and 15 green. If a marble is drawn at random, what is the probability that it is not red?

  1. 14
  2. 34
  3. 12
  4. 25

Answer (Detailed Solution Below)

Option 2 : 34

Probability and Conditional Probability Question 1 Detailed Solution

The probability of drawing a non-red marble is the complement of drawing a red marble. There are 10 red marbles out of 40, so 30 are not red. Therefore, the probability is 3040=34. Thus, option 2 is correct. Other options are based on incorrect calculations or misunderstandings of the problem.

Probability and Conditional Probability Question 2:

During a quality check, it was found that 12 out of every 60 smartphones produced by a factory are defective. What is the probability that a randomly chosen smartphone is defective?

  1. 15
  2. 14
  3. 13
  4. 16

Answer (Detailed Solution Below)

Option 1 : 15

Probability and Conditional Probability Question 2 Detailed Solution

The probability that a smartphone is defective is given by the number of defective smartphones divided by the total number of smartphones. Here, 12 out of 60 are defective, so the probability is 1260=15. Thus, option 1 is correct. Incorrect options arise from errors in simplification or arithmetic.

Probability and Conditional Probability Question 3:

In a lottery, the probability of winning is 3 out of 150. What is the probability of not winning the lottery?

  1. 4950
  2. 15
  3. 150
  4. 4750

Answer (Detailed Solution Below)

Option 1 : 4950

Probability and Conditional Probability Question 3 Detailed Solution

The probability of winning is given as 3150. Therefore, the probability of not winning is 13150=147150=4950. Thus, the correct answer is 4950

Probability and Conditional Probability Question 4:

In a box of 50 light bulbs, 8 are defective. What is the probability that a randomly selected light bulb from the box is not defective?

  1. 2125
  2. 850
  3. 825
  4. 4350

Answer (Detailed Solution Below)

Option 1 : 2125

Probability and Conditional Probability Question 4 Detailed Solution

The total number of light bulbs is 50, and the number of defective bulbs is 8. Therefore, the number of non-defective bulbs is 508=42. The probability that a randomly selected bulb is not defective is 4250=2125. The correct answer is 2125, option 1 is the  correct answer . 

Probability and Conditional Probability Question 5:

In a group of 200 students, 50 students are in the chess club. If one student is chosen at random, what is the probability that this student is not in the chess club?

  1. 14
  2. 34
  3. 12
  4. 15

Answer (Detailed Solution Below)

Option 2 : 34

Probability and Conditional Probability Question 5 Detailed Solution

The probability of selecting a student who is not in the chess club is the complement of selecting one who is in the club. There are 50 students in the chess club, so 150 are not. The probability is 150200=34. Hence, option 2 is correct. 

Probability and Conditional Probability Question 6:

A survey reveals that 15 out of every 75 employees in a company use public transportation to commute. If one employee is selected at random, what is the probability that this employee uses public transportation?

  1. 15
  2. 13
  3. 14
  4. 16

Answer (Detailed Solution Below)

Option 3 : 14

Probability and Conditional Probability Question 6 Detailed Solution

To find the probability that an employee uses public transportation, we first note that 15 out of 75 employees use it. The probability is calculated by dividing the number of favorable outcomes by the total number of outcomes. Therefore, the probability is 1575=15. Thus, the correct answer is 15. The other options result from incorrect simplifications or arithmetic errors.

Probability and Conditional Probability Question 7:

A class has 30 students, where 70% are male. How many students are female?

  1. 21
  2. 18
  3. 9
  4. 12

Answer (Detailed Solution Below)

Option 3 : 9

Probability and Conditional Probability Question 7 Detailed Solution

If 70% of the students are male, then 30% are female, since the total must be 100%. Calculate 30% of 30 to find the number of females: 0.30×30=9. Hence, there are 9 female students, which is option 3.

Probability and Conditional Probability Question 8:

In a dice game, the probability of rolling a 6 is 16. What is the probability of not rolling a 6?

  1. 16
  2. 56
  3. 13
  4. 56

Answer (Detailed Solution Below)

Option 4 : 56

Probability and Conditional Probability Question 8 Detailed Solution

The probability of rolling a 6 is 16. The probability of the complement event (not rolling a 6) is 116=56. Therefore, the probability of not rolling a 6 is 56, which is option 4.

Probability and Conditional Probability Question 9:

A box contains 20 blue, 15 green, and 5 red marbles. If a marble is drawn at random, what is the probability that it is not blue?

  1. 14
  2. 25
  3. 12
  4. 35

Answer (Detailed Solution Below)

Option 3 : 12

Probability and Conditional Probability Question 9 Detailed Solution

There are a total of 20+15+5=40 marbles. The probability of drawing a non-blue marble is the number of non-blue marbles divided by the total number of marbles. There are 15+5=20 non-blue marbles. Thus, the probability is 2040=12. Option 3 is correct answer.

Probability and Conditional Probability Question 10:

A jar contains 10 red, 5 blue, and 3 yellow balls. What is the probability of drawing a blue or yellow ball?

  1. 13
  2. 818
  3. 518
  4. 12

Answer (Detailed Solution Below)

Option 2 : 818

Probability and Conditional Probability Question 10 Detailed Solution

The total number of balls is 10+5+3=18.

The number of blue or yellow balls is 5+3=8.

Thus, the probability of drawing a blue or yellow ball is 818=49.

However, to match the options, we present 818 directly, which simplifies to 49, but the unsimplified version corresponds to option 2.

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