Fill the number from 1 to 16 in to the following blanks according the following requirements.

题目

Fill the number from 1 to 16 in to the following blanks according the following requirements.
a. the sum of each line is 34
b. the sum of the four middle number is 24
c. the sum of the numbers in each corner is 34.
4→?→?→13
?→?→?→?
?→?→?→?
7→?→?→?

答案

4 1 16 13
15 2 5 12
8 3 14 9
7 6 11 10