Puzzle of The Day #1

Solution:-

The answer is 49 (36+13). The difference between each two 
consecutive numbers grows in the order of 3, 5, 7, 9, 11, and 13. All odd numbers.

1+3=4

4+5=9

9+7=16

16+9=25

25+11=36

Likewise 36+13=49

puzzle of the Day #2

Puzzle of The Day #2

             Solution:-

                   The missing number is 6.

                   The two numbers opposite each other always will be 21.

                   10 + 11 = 21

                   13+8=21

                   4+17=21

                   15+6=21