A man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to make 100 per cent certain he has a pair of black socks?
590,000
625,000
6% off
1,499
2,499
40% off
590,000
625,000
6% off
3,999
5,499
27% off
999
1,499
33% off
590,000
0.0
5.0
5.0
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