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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3887. A number is selected at random from first 50 natural numbers. Find the probability of it being a multiple of 3 and 4.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3888. All the black face cards are removed from a pack of 52 cards. The remaining cards are well shuffled and then a card is drawn at random. Find the probability of getting a

(i) face card

(ii) red card

(iii) black card

(iv) king.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3889. A bag contains three green marbles, four blue marbles, and two orange marbles. If a marble is picked at random, then find the probability of it not being an orange marble.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3889 is correct. Neat work, Monox D. I-Fly!

#3890. In a single throw of a die, find the probability of getting a multiple of 3.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3890 is correct. Neat work, Monox D. I-Fly!

#3891. A number x is chosen at random from the numbers -3, -2, -1, 0, 1, 2, and 3. Find the probability of |x| < 2.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3892 is correct. Excellent, Monox D. I-Fly!

#3893. If a digit is drawn at random from the digits 1, 2, 3, 4, 5, 6, 7, 8, and 9, find the probability of

(i) it being odd

(ii) it being even

(iii) it is a multiple of 3.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3893 (three parts) is correct. Wonderful, Monox D. I-Fly!

#3894. If three coins are tossed simultaneously, find the probability of getting at least two heads.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3895. A number is selected at random from the numbers 3,5,5,7,7,7,9,9,9, and 9. Find the probability of the selected number being the average.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3896. In a single of throw of a pair of dice, find the probability of getting the sum of a square.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3897. A number is selected from first 50 natural numbers. What is the probability of it being a multiple of 3 or 5?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3897 is correct. Magnificent, Monox D. I-Fly!

#3898. 'A' sold 100 lottery tickets is which 5 tickets carry prizes. If 'B' purchased a ticket, what is the probability of 'B' winning a prize?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3897 is correct. Magnificent, Monox D. I-Fly!

#3898. 'A' sold 100 lottery tickets is which 5 tickets carry prizes. If 'B' purchased a ticket, what is the probability of 'B' winning a prize?

#3899. If P(E) = 0.05, then P(not E) = ?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solutions #3898 and #3899 are both correct. Neat work, Monox D. I-Fly!

#3900. The probability of guessing the correct answer to a certain question is x/12. If the probability of not guessing the correct answer to this question is 2/3, then find the value of x.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solution #3900 is correct. Neat work, Monox D. I-Fly!

#3901. A card is accidentally dropped from a pack of 52 cards. Find the probability of it being an ace.

#3902. A number is selected from numbers 1 to 25. Find the probability of it being prime.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,252

Since when did you start double questions?

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

The solutions #3901 and #3902 are both correct. Neat work, Monox D. I-Fly!

In some cases, the puzzles are relatively simple. That's the reason I put two puzzles.

#3903. Find the probability of throwing a number greater 2 with a fair dice.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3904. One card is drawn from a well shuffled deck of 52 playing cards. What is the probability of getting a non-face card?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 25,611

Hi,

#3905. A die is thrown once. Find the probability of getting (i) a prime number (ii) a number between 2 and 6.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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