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Question

(I). Kamal is available at home from 12 noon to 4 p.m. on Tuesday, Thursday and Sunday.
(II). His younger brother Navin is available at home on Monday, Thursday, Friday and Sunday between 10 a.m. to 2 p.m.
(III). The eldest brother Rajiv is available between 9 a.m. to 12 noon on Monday, Wednesday and Thursday and 2 p.m. to 4 p.m. on Friday, Saturday and Sunday.

At a time, on which day of a week all the three brothers are available at home ?


A
None
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B
Sunday
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C
Thursday
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D
Canont be determined
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E
None of these
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Solution

The correct option is D None
We prepare a table as under :
MonTueWedThuFriSatSun
9 a.m. to 10 a.m.RRR
10 a.m. to 12 noonN, RRN, RNN
12 noon to 2 p.m.NKK, NNK, N
2 p.m. to 4 p.m.KKRRK, R
Clearly, all the three brothers are not available at the same time on any day of the week.

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