By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What 5-letter word typed in all capital letters can be read the same upside down?

Can you find the hidden animal in the picture below?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

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

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

Buy me, smell me or deliver me, I do not change.

Who am I?

Count the Triangle in the figure given below:

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.