Pls pls solve it as soon as possible its really vry vry urgent

Pls pls solve it as soon as possible its really vry vry urgent 14. Which number should go in the fourth triangle. Clue: The three numbers round the outside of the triangle to get the number in the middle. 15. Magic Square Draw a magic square such that sum of each row, each column and each diagonal is 15. Number mt be repeated in any row, column and diagonally.