Find the hidden tiger in the given optical illusion ?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?