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

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

What Time Should the last watch show in the below figure?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

Different lights make me strange by changing me into different sizes. What am I?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?