I’m tall when I’m young, and I’m short when I’m old. What am I?

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?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

What happened when the wheel was invented?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

Next Number in the Series,

5, 16, 49, 104, ?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?