Decode below three cipher riddles:

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

What does a man do only once in his lifetime, but women do once a year after they are 29?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

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