I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Solve below rebus puzzle?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Which letter of the alphabet has the most water?

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Replace the question mark with the correct number in the below-given picture?

What is the centre of gravity?

Can you replace the question mark with the correct number in the below table sequence?