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Which of the following is not equivalent...

Which of the following is not equivalent to `p to q`.

A

p only if q

B

q is necessary for p

C

q only if p

D

p is suficient for q

Text Solution

Verified by Experts

The correct Answer is:
C
`ptoq` means,
(i) p is sufficient for q
(ii) p only if q
(iii) q is necessary condition for p
(iv) `~ q to ~p`
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