Puzzles
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1. EINSTEIN'S RIDDLE -
| House | Yellow | Blue | Red | Green | White |
| Nationality | Norwegian | Dane | Brit | German | Swede |
| Beverage | Water | Tea | Milk | Coffee | Beer |
| Cigar | Dunhill | Blends | Pall Mall | Prince | Bluemasters |
| Pet | Cat | Hourses | Birds | FISH | Dog |
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Turn ON one switch and wait for a while. Switch OFF that switch and turn ON another one. Rush upstairs.
1. If the bulb is ON the switch that you left ON is the correct switch.
2. If the bulb is OFF but hot, then the switch that you turned ON the first time and then turned OFF is the correct one.
3. If the bulb is neither ON nor HOT, the switch that you never touched is the correct one.
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Hour hand and minute hand overlap 22 times.
In 12 hrs minute hand makes 12 complete round and hour hand makes one. So 12 - 1 = 11 in 12 hrs and so 22 in 24 hrs.
Hour hand and second hand overlap 1438 times.
In 12 hrs second hand makes 12*60=720 complete rounds while hour hand makes only one. So 720 - 1 = 719 in 12 hrs and 1438 in 24 hrs.
Minute hand and second hand overlap 1416 times.
In 12 hrs second hand makes 12*60=720 complete rounds while minute hand makes only 12. So 720-12=708 in 12 hrs and 1416 in 24 hrs.
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8, 3, 3
Second fellow was confused cause there were 2 possible combinations. There are just two combinations that give the same sum (8,3,3) and (2,6,6)
Next info says he has an eldest daughter. In 2,6,6 there can't be just 1 eldest daughter. Hence 8,3,3