Find the next number in the sequence

1, 2, 6, 21, 88, __?

What is the longest word in the dictionary?

Replace the question mark with the correct number.

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

2, 3, 5, 9, 17, _ What is the next number in the sequence?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What do you see in the given picture?