What is always in front of you but can’t be seen?

What goes up but never comes down?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Take away the whole and some still remain. What is it?

What work can one never finish?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

How could a baby fall out of a twenty-story building onto the ground and live?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Can you replace the question mark with the correct number in the below table sequence?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?