Find the number of squares in the below picture

What does this mathematical rebus means ?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What is more useful when it is broken?

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?

What is common among 11, 69, and 88?

Can you solve below mathematical equation?

2^1234 - 2^1233

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?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?