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

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Only Highly Attentive Can Spot The Ladder In This Library In 7 Seconds! Can You?

Find the Goldfish below the given Image.

Find the missing value of "?" in the letter sequence below.

CAD
EBG
KBM
OCR
DDH
NL?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

What does this say?

XLR8

I look at you, you look at me, I raise my right, you raise your left. What am I?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _