Puzzle of the day: 139
If a couple has 4 children then what are the chances that 2 of them are girls and 2 of them are boys.
- 1/2
- 3/8
- 1/16
- none of these
If a couple has 4 children then what are the chances that 2 of them are girls and 2 of them are boys.
Answer: (2) 3/8 Solution: Total ways: 2*2*2*2 = 16 possibilities Favorable ways: There are 4C2 = 6 ways to select the 2 places out of 4. Let’s call those 2 places boys so other 2 places will become girls. hence probability = 6/16 = 3/8
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