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Math Riddles
K.THIYAGU,
Assistant Professor,
Department of Education,
Central University of Kerala, Kasaragod
CC-BY-SA (Math Riddles) 1
A riddle is a statement or
question having a double or
veiled meaning, put forth as
a puzzle to be solved.
CC-BY-SA (Math Riddles) 2
Riddle is a speech play. It is one of
the minor genres of folk literature.
Riddle is an expression that refers
to something different.
Riddle is a speech play that
involves question and answer.
Riddles are mostly told by children
or young people in contrast to
proverbs which are mostly used by
adults.
CC-BY-SA (Math Riddles) 3
Riddles
Enigmas
which are problems generally expressed in
metaphorical or allegorical language that
require ingenuity and careful thinking for
their solution
Conundra
which are questions relying for their effects
on punning in either the question or the
answer.
CC-BY-SA (Math Riddles) 4
Examples of Riddles
CC-BY-SA (Math Riddles) 5
A bird built a house but the house
has no doors and it has no windows ?
Answer: An Egg.
CC-BY-SA (Math Riddles) 6
There is a huge house with only one pillar ?
Answer: Mushroom.
CC-BY-SA (Math Riddles) 7
Two brothers who always walk in the
same direction?
Answer: A Person's Legs.
CC-BY-SA (Math Riddles) 8
what walks with four legs in the morning, with two
legs at noon, with three legs in the evening ?
Answer: A Person
(crawls on all fours as a baby, walks with two legs as an adult, and is supported by a walking stick when the person becomes old).
CC-BY-SA (Math Riddles) 9
You buy a rooster for the purpose of laying eggs and you expect to get three eggs
each day for breakfast, how many eggs will you have after three weeks?
Answer: Zero
(roosters do not lay eggs)
CC-BY-SA (Math Riddles) 10
Examples of
Mathematics Riddles
CC-BY-SA (Math Riddles) 11
Add any number to the number itself and then multiply by 4.
Again divide the number by 8 and you will get the same number once more.
Which is that number?
Answer: Any Number
CC-BY-SA (Math Riddles) 12
X is an odd number.
Take an alphabet away from X and it becomes even.
Which is that number?
Answer: Seven (Seven-S=Even)
CC-BY-SA (Math Riddles) 13
Sai Amartya was asked to paint the number of plates on 100 apartments which
means she will have to paint numbers 1 through 100.
Can you figure out the number of times she will have to paint the number 8?
Answer: 20 times.
(8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 98)
CC-BY-SA (Math Riddles) 14
A grandfather, two fathers and two sons went to the movie theater together and
everyone bought one movie ticket each. How many tickets did they buy in total?
Answer: Three
(the grandfather is also a father and the father is also a son)
CC-BY-SA (Math Riddles) 15
If it took 6 people 9 hours to build a barn,
how long would it take 12 people to build the same barn?
Answer: None
(The barn is already built!)
CC-BY-SA (Math Riddles) 16
I am a three-digit number. My second digit is 4 times bigger than the
third digit. My first digit is 3 less than my second digit. Who am I?
Answer: 141
CC-BY-SA (Math Riddles) 17
Answer: Zero, 0
If you multiply this number by any other number,
the answer will always be the same.
What number is this?
CC-BY-SA (Math Riddles) 18
Answer: When it is 9 AM, add 5
hours to it and you will get 2PM
I add five to nine, and get two.
The answer is correct, but how?
CC-BY-SA (Math Riddles) 19
Using only addition, how can you add eight
8’s to get the number 1,000?
Answer: 888 +88 +8 +8 +8 =1,000
CC-BY-SA (Math Riddles) 20
Answer: Drop “S” in the Spelling Seven.
How do you make the number 7 an even number without
addition, subtraction, multiplication or division?
CC-BY-SA (Math Riddles) 21
Answer: F I V E
(Remove the 2 letters F and E from five and you have IV.)
How can you take 2 from 5 and leave 4?
CC-BY-SA (Math Riddles) 22
Answer: Two
(Inside and Outside)
How many sides does a circle have?
CC-BY-SA (Math Riddles) 23
Thank You
K.THIYAGU,
Assistant Professor,
Department of Education,
Central University of Kerala, Kasaragod
CC-BY-SA (Math Riddles) 24

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Mathematics Riddles

  • 1. Math Riddles K.THIYAGU, Assistant Professor, Department of Education, Central University of Kerala, Kasaragod CC-BY-SA (Math Riddles) 1
  • 2. A riddle is a statement or question having a double or veiled meaning, put forth as a puzzle to be solved. CC-BY-SA (Math Riddles) 2
  • 3. Riddle is a speech play. It is one of the minor genres of folk literature. Riddle is an expression that refers to something different. Riddle is a speech play that involves question and answer. Riddles are mostly told by children or young people in contrast to proverbs which are mostly used by adults. CC-BY-SA (Math Riddles) 3
  • 4. Riddles Enigmas which are problems generally expressed in metaphorical or allegorical language that require ingenuity and careful thinking for their solution Conundra which are questions relying for their effects on punning in either the question or the answer. CC-BY-SA (Math Riddles) 4
  • 5. Examples of Riddles CC-BY-SA (Math Riddles) 5
  • 6. A bird built a house but the house has no doors and it has no windows ? Answer: An Egg. CC-BY-SA (Math Riddles) 6
  • 7. There is a huge house with only one pillar ? Answer: Mushroom. CC-BY-SA (Math Riddles) 7
  • 8. Two brothers who always walk in the same direction? Answer: A Person's Legs. CC-BY-SA (Math Riddles) 8
  • 9. what walks with four legs in the morning, with two legs at noon, with three legs in the evening ? Answer: A Person (crawls on all fours as a baby, walks with two legs as an adult, and is supported by a walking stick when the person becomes old). CC-BY-SA (Math Riddles) 9
  • 10. You buy a rooster for the purpose of laying eggs and you expect to get three eggs each day for breakfast, how many eggs will you have after three weeks? Answer: Zero (roosters do not lay eggs) CC-BY-SA (Math Riddles) 10
  • 12. Add any number to the number itself and then multiply by 4. Again divide the number by 8 and you will get the same number once more. Which is that number? Answer: Any Number CC-BY-SA (Math Riddles) 12
  • 13. X is an odd number. Take an alphabet away from X and it becomes even. Which is that number? Answer: Seven (Seven-S=Even) CC-BY-SA (Math Riddles) 13
  • 14. Sai Amartya was asked to paint the number of plates on 100 apartments which means she will have to paint numbers 1 through 100. Can you figure out the number of times she will have to paint the number 8? Answer: 20 times. (8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 98) CC-BY-SA (Math Riddles) 14
  • 15. A grandfather, two fathers and two sons went to the movie theater together and everyone bought one movie ticket each. How many tickets did they buy in total? Answer: Three (the grandfather is also a father and the father is also a son) CC-BY-SA (Math Riddles) 15
  • 16. If it took 6 people 9 hours to build a barn, how long would it take 12 people to build the same barn? Answer: None (The barn is already built!) CC-BY-SA (Math Riddles) 16
  • 17. I am a three-digit number. My second digit is 4 times bigger than the third digit. My first digit is 3 less than my second digit. Who am I? Answer: 141 CC-BY-SA (Math Riddles) 17
  • 18. Answer: Zero, 0 If you multiply this number by any other number, the answer will always be the same. What number is this? CC-BY-SA (Math Riddles) 18
  • 19. Answer: When it is 9 AM, add 5 hours to it and you will get 2PM I add five to nine, and get two. The answer is correct, but how? CC-BY-SA (Math Riddles) 19
  • 20. Using only addition, how can you add eight 8’s to get the number 1,000? Answer: 888 +88 +8 +8 +8 =1,000 CC-BY-SA (Math Riddles) 20
  • 21. Answer: Drop “S” in the Spelling Seven. How do you make the number 7 an even number without addition, subtraction, multiplication or division? CC-BY-SA (Math Riddles) 21
  • 22. Answer: F I V E (Remove the 2 letters F and E from five and you have IV.) How can you take 2 from 5 and leave 4? CC-BY-SA (Math Riddles) 22
  • 23. Answer: Two (Inside and Outside) How many sides does a circle have? CC-BY-SA (Math Riddles) 23
  • 24. Thank You K.THIYAGU, Assistant Professor, Department of Education, Central University of Kerala, Kasaragod CC-BY-SA (Math Riddles) 24