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In town of 300 people, 130 watch NDTV, 130 Watches Zoom and 130 Watches Sony. 52 Watch NDTV and Zoom.55 Watch Zoom and Sony and 50 Watch sony and Ndtv. 39 Watch none of these. then how many watch only one channel.
ans. a.13 b.260 c. 154 d. 160
Read Solution (Total 7)
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- 39=300-(130+130+130-55-52-50+x)
solve x
x=28
use venn diagram to solve further
so exactly once means remove the intersetion part
so 56+53+51=160
- 10 years agoHelpfull: Yes(18) No(2)
- can somebody explain in detail with formulae
- 10 years agoHelpfull: Yes(5) No(1)
- ans. c)160
- 10 years agoHelpfull: Yes(3) No(3)
- 160
by venn diagram - 10 years agoHelpfull: Yes(3) No(1)
- |A u B u C|=|A|+|B|+|C|-|A ∩ B|-|A ∩ C|-|B ∩ C|+|A ∩ B ∩ C|
- 10 years agoHelpfull: Yes(1) No(0)
- how prove it
- 10 years agoHelpfull: Yes(0) No(0)
- 160 BY VENN DIAGRAM
- 10 years agoHelpfull: Yes(0) No(0)
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