Can you identify if it's a murder or a suicide ?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

What can you serve, but never eat?

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?