One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?