What Time Should the last watch show in the below figure?

Can you replace the question mark with the correct number?

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?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Find the missing letter in the last circle logically in the given below picture.

What do you get if you add 2 to 100 four times?

Can you tell a 3D object that has just two surfaces?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?