Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

How is the moon similar to a dollar?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

When it is alive we sing, when it is dead we clap our hands. What is it?

What does below Rebus say?

XLR8

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?