Statement:
All belts are rollers. Some rollers are wheels. All wheels are mats.
Some mats are cars.
Conclusions:
I. Some mats are rollers.
II. Some mats are belts.
III. Some cars are rollers.
IV. Some rollers are belts.

The given series is in the below pattern , we can see that
cabbac / cabbac / cabbac.
Hence , required answer will be acbcb .

All others are national holidays.

A nebulous from means having an ambiguous from same as an insipid taste which is dull, boring, almost no taste.

As paper is product of tree. Similarly glass is product of sand.

if both I and II are implicit.

'Tall' is opposite to 'Dwarf' and 'Cruel' is opposite to kind.

Former cannot be expected from the latter.

H < T ...(i) T ? B ...(ii) B > R ...(iii)
From (i) and (ii) we get H < T ? B or B > H.
Hence III does not follow.

Fill the blank space with correct alphabets as NOPQ word is repeating.
N O P Q , N O P Q, N O P Q, N O P Q ? NOPQ