Can you convert the number zero(0) into a positive number using just one mathematical operator ?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

What number do you get when you multiply all of the numbers on a telephone's number pad?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

Can you write down eight eights so that they add up to one thousand?

Can you replace the question mark with the correct number in the below table sequence?

What's a single-digit number with no value?