What does this simple rebus mean?

Find the smallest sentence with all the English alphabet.

What is the difference between a jeweller and a jailer?

What is the end of everything?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What makes this number unique: 8,549,176,320?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?