Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

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

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What is black when you buy it, red when you use it, and gray when you throw it away?