Has math ever disappointed anyone? Well, if you have a math test, there can be disappointment. But in general, mathematics is an interesting subject. Don’t you believe us? Take these exciting math riddles.
Math Riddles with Answers:
Mathematical riddle 1:
Sam has a nice box. The box has 4 brown buttons, 7 gray buttons and 5 black buttons. In reality, each button is a different size. Sam selects a button at random. What do you think is the probability that Sam chooses the smaller black button?
Mathematical riddle 2:
John saves $200 more each year than he did the year before. If John started with $400 the first year, how many years will it take to reach $18,000 (if we exclude interest)?
Mathematical riddle 3:
Henry, the magician, has a unique die that he uses for his magic tricks. Six faces of the die are marked 1, 2, 3, 4, 5 and 5 respectively. Note that the magician’s die does not have any 6s on either face. If Henry calls one of the volunteers from the audience and the volunteer rolls 3 of those dice in a row, what do you think is the probability of getting a total sum of 14 on the top face?
HERE ARE THE OPTIONS:
- The chances are between 20% and 25%.
- The chances are more than 25%.
- The chances are between 5% and 10%.
- The chances are between 10% and 20%.
Mathematical riddle 4:
Are you smart enough to understand the unique series? What number do you think is in K?
0.. 6.. 24.. 60.. 120.. K
HERE ARE THE OPTIONS:
- 120
- 150
- 180
Here are the answers:
Mathematical riddle 1:
Sam has a nice box. The box has 4 brown buttons, 7 gray buttons and 5 black buttons. In reality, each button is a different size. Sam selects a button at random. What do you think is the probability that Sam chooses the smaller black button?
Answer: 1/5
Mathematical riddle 2:
John saves $200 more each year than he did the year before. If John started with $400 the first year, how many years will it take to reach $18,000 (if we exclude interest)?
Answer: 12 years
Mathematical riddle 3:
How many times can you subtract five from twenty-five?
Answer: just once
Mathematical riddle 4:
If seven people meet and each shakes hands only once with each other, how many handshakes will there have been?
Answer: twenty-one
Categories: Optical Illusion
Source: ptivs2.edu.vn