It was vacation time, and so I decided to visit my cousin's home. What
a grand time we had! In the mornings, we both would go for a jog. The
evenings were spent on the tennis court. Tiring as these activities
were, we could manage only one per day, i.e., either we went for a jog or
played tennis each day. There were days when we felt lazy and stayed
home all day long.
Now, there were 12 mornings when we did nothing, 18 evenings when we
stayed at home, and a total of 14 days when we jogged or played
tennis. For how many days did I stay at my cousin's place?
Use sets and venn diagram to solve such questions.a,b ,aub,anb etc.
12=tennis+leave
18=jog +leave
so jog-tennis=6
again jog+tennis=14.so solve and get jog=10,leave=8,tennis=4.so tot=22
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