I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

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

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

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

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

What has 88 keys?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?