Which word does the below Plexor means ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic 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?

When it's bad luck to meet a black cat?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?