what does the below math rebus puzzle mean?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Can you find out what is missing?

1 3 5
2 4 ?

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

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Why 1729 is a magic number? Answer Logically.