Three statements are given followed by four conclusions numbered 1, 2, 3, and 4. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically does NOT follow(s) from the statements.
Statements:
Some Nights are Lights No Light is a Van.
All Vans are Whips. Conclusions:
1) Some Nights are not Vans.
2) No Van is a Light.
3) Some Whips are not Lights.
4) Some Nights are Whips.
(a) Only conclusion 4 does not follow.
(b) Only conclusion 2 does not follow.
(c) Only conclusion 1 does not follow.
(d) Only conclusion 3 does not follow.
Sol:
