With the help clues provided in the image, can you find the 5 digit key?

Complete the table series riddle by finding the number that can replace "??".

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Move three sticks of the spiral below to form a square.

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?