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Byju's Answer
Standard XII
Mathematics
Contra-Positive Method of Validation
In the expres...
Question
In the expression
′
P
÷
Q
−
T
′
, how is T related to P?
A
Mother
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B
Sister
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C
Brother
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D
Either brother or sister
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Solution
The correct option is
C
Either brother or sister
P
÷
Q
→
P
is son of Q.
Q
−
T
→
Q
is father of T.
T is either brother or sister of P.
Hence the answer is option D
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