Popular Probability Puzzle
This is a popular probability puzzle in which you have to select the correct answer at random from the four options below.
Can you tell, whats the probability of choosing correct answer in this random manner.
1) 1/4
2) 1/2
3) 1
4) 1/4
0%
Explanation:
1) Why can’t be 1/4 :
If the answer is 1/4, then as we know two out of four answer choices is ‘1/4’, the answer has be 1/2.
This is a contradiction, so the answer cannot be 1/4.
2) why cant be 1/2 :
If the answer is 1/2 then because answer:”1/2″ is 1 out of 4 answer choices, the answer must be 1/4. This is also a contradiction. So the answer cannot be 1/2.
3) why cant be 1 :
If the answer is 1 then because answer:”1″ is 1 out of 4 answer choices, the answer must be 1/4. Again the same contradiction and therefore answer cannot be 1.
number of possible cases = 4
number of correct cases = 1
so probability = required/total no of cases
this is equal to 1/4
Your Answer
More puzzles to try-
Dice Game with Math
On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a ...Read More »Count the day
What is two days after the day after the day before yesterday?Read More »Find the odd one out.
Find the odd one out. A. 31 B. 39 C. 47 D. 41 E. 43Read More »Which switch controls the bulb??
Outside a room there are three light switches. One of switch is connected to a light bulb inside the room. ...Read More »The Odd Ball
There are twelve identical-looking balls, but one is either heavier or lighter than the other eleven. How can you determine ...Read More »Errors in Sentence
They are three errirs in this question. Can you find them?Read More »Look
A fine, polished mirror is in front of me, but why can’t I see my reflection?Read More »Five pieces of chain to make a long chain riddle
You have five pieces of chain, each consisting of three links. You want to make one long chain of these ...Read More »Cow and Food riddle
A Cow is tied to a rope 4 meters long and the Cow food is 16 metres away from the ...Read More »How does he know which one is his brother?
After looking for his long lost brother that he has never met before, Justin is able to learn his brother’s ...Read More »Three house puzzle
There are 3 houses black, red and white . The black one is in the north ,the red one is ...Read More »What if the pizza was worth $11?
Rihana, Peeta, and Logan order a pizza for $10. Out of the three, Rihana and Peeta were quite hungry and ...Read More »Which way leads to the gift
Moon is similar to a dollar
How is the moon similar to a dollar?Read More »Death in a Field
A man is lying dead in a field. Next to him there is an unopened package. There is no other ...Read More »Soldiers crossing river
An army general wanted ten soldiers to cross a river. There was no bridge and the soldiers could not swim. ...Read More »Royal Party Entry
Queen Elizabeth organised a royal party. To Avoid uninvited guest royal family set a password. Jack (an uninvited person) plan ...Read More »Probability Puzzle
The lifetime of a color TV picture tube is normally distributed, with a mean of 8 years and a std. ...Read More »6,7,8 is an educational degree
I am an Eleven letter word 6,7,8 is an educational degree 5,9,1 is related to geometry 11,10 is an educational ...Read More »Avoiding The Train
A man was walking along a railway track when he spotted an express train speeding towards him. To avoid it, ...Read More »