The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.
Value
0
1
2
3
4
5
6
7
Frequency
3
6
7
10
8
5
2
1
(a) In how many weeks were at least 2 bikes sold?
(b) In how many weeks were at least 5 bikes sold?
(c) In how many weeks were an even number of bikes sold?
