Question 17
In the given diagram, each circle contains a natural number and the diagram satisfies the following conditions:
1. The number labelled along each edge represents the difference between the numbers in the two circles joined by the edge.
2. The sum of the numbers in the $5$ circles is equal to $1979$.
Find the number in circle $A$.
1. The number labelled along each edge represents the difference between the numbers in the two circles joined by the edge.
2. The sum of the numbers in the $5$ circles is equal to $1979$.
Find the number in circle $A$.