How many bananas can you eat if your stomach is empty?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What does Alexander the Great and Winnie the Pooh have in common?

I can write cow in 13 letters.

Can You?

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?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What is common among 11, 69, and 88?