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

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

When can we add 2 to 11 and get 1 as the correct answer?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

What jumps when it walks and sits when it stands?