Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

I know a nine-letter word having only one vowel.
Do you ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

What type of tree can I carry in my hand?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?