what does the below math rebus puzzle mean?

Look at the picture and find out which square is not linked with any of the other squares.

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

81 x 9 = 801. What must you do to make the this equation true?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Can you find the six hidden animals in the picture below?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?