I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Solve the mathematical equation in the picture below.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Why is it very easy to weigh a fish?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?