4.
1 answer:
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4 yellow + 6 green + 10 purple = 20 total tiles
1st draw P purple: 10 purple/20 total
2nd draw P purple: 9 purple/19 total
Probability purple then purple (no returns):
= 90/380
= 45/190
= 9/38
1st draw P purple: 10 purple/20 total
2nd draw P purple: 9 purple/19 total
Probability purple then purple (no returns):
= 90/380
= 45/190
= 9/38