example:
A B
1 31-Oct 10000
2 31-Oct 3000
3 31-Oct 5000
4 01-Nov 6000
5 01-Nov 2000
6
7

On the above example, i want to get the sum of column B from October 31
only, the value from Nov 1 was not included. what formula is appropriate for
this situation? i only want to get the sum for Oct 31. Please do help me, i
really need it. thanks in advance.