#21 - GK FAQ Riddle
Can you name some countries which do not have the alphabet 'A' in it. ?
Belgium, Chile, Fiji, Egypt
#22 - Ramanujan Magic Number Riddle
Ramanujan discovered 1729 as a magic number.
Why 1729 is a magic number ?
They can be expressed as the sum of the cubes of two different sets of numbers.
10^3 + 9^3 = 1729
and
12^3 + 1^3 = 1729
#23 - Short History Riddle
October Revolution is well know in russian history. Which month do they celebrate it ?
November, Their calandar was 13 days behind ours.
#25 - Famous Trivia Puzzle
Can you tell a 3D object that actually has just two surfaces?
Did you think of paper?
Well that will be a wrong answer as a piece of paper has 6 surfaces as the edges are also counted as surfaces only no matter how thin they are.
The correct answer is a cone.
#26 - Trivia Science Riddle
If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?
The most common answer would be 5. But that’s totally incorrect. It will be the square root of 10 times stronger i.e. 3.16 times.
#27 - General Knowledge Riddle
What was the duration for which the hundred years war lasted ?
It lasted from 1337 to 1453 i.e. 116 years.
#28 - Impossible Maths Number Riddle
We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube ?
There is no number other than 7 that is a prime followed by a cube.
To prove, let us assume that n3-1 is a prime for n.
N2-1 = (n^1)(n2+n+1)
Now, n-1 divides n3-1.
If n-1>1, then we are done as it is a contradiction to n3-1 being a prime.
#29 - Fun But Hard Maths Riddle
How high will you have to count before you use the letter A?
One Thousand
#30 - Mystery Number Riddle
Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it ?
If you start arranging the numbers alphabetically, the numbers 8 (eight) will come first and the number 2202 (two thousand two hundred and two) will come at last.