BOOK is something you READ. FOOD is something you EAT. The relationship is purpose/action.

Each number is multiplied by 2. 3×2=6, 6×2=12, 12×2=24, 24×2=48, 48×2=96.

CAR is a specific example of AUTOMOBILE (category). FLOWER is a specific example of PLANT (category). The relationship is specific to general.

Series of perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36.

Each letter is coded as its position in the alphabet. T=20, H=8, I=9, N=14, K=11

T is the daughter of S. S is the brother of Q. Q is the son/daughter of P. Therefore, T is the granddaughter of P.

Each term is multiplied by 3. 162 × 3 = 486

Some fruits are sweet AND all sweet things are healthy. Therefore, logically some fruits must be healthy.

Each number is doubled. 80 × 2 = 160

Each letter is coded by its position in alphabet. M=13, O=15, B=2, I=9, L=12, E=5