If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

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

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

What can go through glass without breaking it?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

I don't get anymore wetter, no matter how much rain falls on me.

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?