The pattern is doubling each time: 2*2=4, 4*2=8, 8*2=16, so next is 16*2=32.

C=3, A=1, B=2; thus CAB=312.

C=3, A=1, B=2, B=2, A=1, G=7, E=5. Total = 3+1+2+2+1+7+5=21.

The letters are rearranged: FISH -> HISF (last letter first), so BIRD -> RIBD.

The letters are reversed in pairs; MANGO becomes ONAGM, so GRAPE becomes RGEAP.

The letters are rearranged: RAT -> TAR, so TOP -> POT.

The pattern involves rearranging letters. SQUARE -> RQUAES, so CIRCLE -> RCEILC.

The letters are reversed; FIRE becomes ERIF.

He ends up 3 km East of his starting point.

Using Pythagorean theorem: distance = √(5^2 + 3^2) = √34 ≈ 8 km.

The person ends up 3 km east of the starting point after walking 5 km south.

Each letter is shifted by +1. B+1=C, I+1=J, R+1=S, D+1=F. So, BIRD is CJSF.

Each letter is shifted by +1. A->B, P->Q, L->M, E->F. So, APPLE is BQQMF.

The series is Fibonacci; next term is 3+5=8.

All numbers except 20 are multiples of 3.

From 'All cats are animals', we can conclude 'Some animals are cats'.

From the statements, we can conclude that some animals (which include cats) are indeed cats.

A pen is used to write, just as a brush is used to paint.