The Prime Number Riddle
Two hundred people in an auditorium are asked to think of a single digit number from 1 to 9 inclusive and write it down. All those who wrote down a prime number are now asked to leave. Ninety people remain behind in the hall. How many of these are expected to have written down an odd number?
Hint: Remember that 1 is not a prime number.
Those that remain behind must have written {1,4,6,8,9} and from this only {1,9} are odd. The probability of an odd number is thus 2/5.
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
The Number Four Be Half Of Five Riddle
Hint:
IV, the Roman numeral for four, which is “half” (two letters) of the word five. Did you answer this riddle correctly?
YES NO
YES NO
1500 Plus 20 And 1600 Minus 40 Riddle
Hint:
My First Half Means Container
Hint:
Snow White Asks The Dwarfs A Question Riddle
Hint:
The compulsive liars are Sneezy and Dopey.
The excerpt has been taken from the story "Snow White and the Seven Dwarfs".
The seven dwarfs are Doc, Grumpy, Happy, Sleepy, Bashful, Sneezy, and Dopey.
The story shows how the dwarfs are living a peaceful life in Dwarf Woodlands and they come across Snow White. They then try to protect her from the attackers and from the poisoned apple from the Queen. Did you answer this riddle correctly?
YES NO
The excerpt has been taken from the story "Snow White and the Seven Dwarfs".
The seven dwarfs are Doc, Grumpy, Happy, Sleepy, Bashful, Sneezy, and Dopey.
The story shows how the dwarfs are living a peaceful life in Dwarf Woodlands and they come across Snow White. They then try to protect her from the attackers and from the poisoned apple from the Queen. Did you answer this riddle correctly?
YES NO
The Correct Number Riddle
Hint:
121
Explanation
Tables consist of squares of the number from 4 to 12.
11^2 = 121. Did you answer this riddle correctly?
YES NO
Explanation
Tables consist of squares of the number from 4 to 12.
11^2 = 121. Did you answer this riddle correctly?
YES NO
Find Those Missing Numbers Riddle
Hint:
The number missing on the left is 8 and the one on right is 7.
Explanation:
The pattern:
The number in the center of triangle is the square root of the sum of the numbers sitting outside on the corners.
Thus,
10 + 22 + 4 = 36
Square Root of 36 = 6
In the same manner:
10 + 42 + 12 = 64
Square Root of 64 = 8
12 + 22 + 15 = 49
Square Root of 49 = 7 Did you answer this riddle correctly?
YES NO
Explanation:
The pattern:
The number in the center of triangle is the square root of the sum of the numbers sitting outside on the corners.
Thus,
10 + 22 + 4 = 36
Square Root of 36 = 6
In the same manner:
10 + 42 + 12 = 64
Square Root of 64 = 8
12 + 22 + 15 = 49
Square Root of 49 = 7 Did you answer this riddle correctly?
YES NO
I Am A 3 Digit Number Between 400 And 800 Riddle
Hint:
If A Door Number Fitter Riddle
Hint:
The answer is 20. Many people have been guessing anywhere from 9 to 19, but the correct answer is 20. Did you answer this riddle correctly?
YES NO
YES NO
Billions Of Eyes
Hint:
Six Legs And A Tail Riddle
Hint:
10 White Men Riddle
Hint:
Someone bowled a strike. The ten white men are the pins, the dirt road is the bowling alley (its not dirt, but its the color of dirt, and if it said a smooth wooden alley it wouldnt be much of a riddle). Three eyes as black as night are the finger holes in the bowling ball. Did you answer this riddle correctly?
YES NO
YES NO
I Have A Tail Riddle
Hint:
I Have Three Eyes
I stare at you, you stare at me. I have three eyes, yet can't see. Every time I blink, I give you commands. You do as you are told, with your feet and hands. What am I?
Hint:
Black, White And Red
Hint:
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