You need to arrange three 7 and mathematical symbols to form number 1?

Rearrange the letters in "new door" to make one word.

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?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

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?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

People make me, save me, change me, raise me. What am I?

Can you find the 09 errors in the picture below?