All country 7 bronze medal and one total number medal less than 13, what's sum silver medal?
Rank Nation Gold Silver Bronze Total
2006 African Swimming Championships
13023411
text text real real real real
2-13023411-1
Medal table
Medal table
1 South Africa 20 10 9 39
2 Algeria 8 9 8 25
3 Tunisia 5 10 5 20
4 Kenya 4 4 1 9
5 Egypt 2 4 7 13
6 Seychelles 1 1 3 5
7 Senegal 0 1 2 3
7 Morocco 0 1 2 3
9 Zimbabwe 0 0 3 3
Total Total 40 40 40 120
SELECT SUM Silver FROM table WHERE Bronze = 7 AND Total < 13
7 13