Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Why do you find that most of the buildings are deprived of the 13th floor?