A man dies of old age on his 25 birthday. How is this possible?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

Name a key which is hardest to turn.

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Can you move 2 matchsticks to form four equal sized squares.

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Replace the question mark with the number below given a simple math problem.