A factory makes memory cards. Workers test the quality of each batch of memory cards made in the factory. For testing purpose, 300 memory cards are selected at random from each batch. Of this sample, 8 memory cards are found to be broken . There are 5,000 memory cards in the batch. About how many memory cards in the batch are likley to be broken in all?
1. 133
2. 17
3. 400
4. 10
