In a certain code, '256' means 'you are good', '637' means 'we are bad' and '358' means 'good and bad'. Which digit stands for 'and'? MCQ with Answer and Explanation

Explanation:
Pattern: ×2 −4: 7×2−4=10, 10×2−4=16, 16×2−4=28, 28×2−4=52, 52×2−4=100.

Explanation:
Each term is multiplied by 2: 3×2=6, 6×2=12, 12×2=24, 24×2=48, so 48×2=96.

Explanation:
From first two, good =3 or 5. From second and third, good =3 or 8. Common good =3. Then from second, remaining for 'is' and 'nice' are 5 and 8. From third, nice and and are 7 and 8 (since good=3). Common for nice is 8. Thus from second, 'is' =5. Wait, then answer B. From above: second 358 = good is nice, good=3, so is and nice =5,8. Third 783 = nice and good, good=3, so nice and =7,8. Thus nice =8, then is =5, and =7. Yes, 'is' =5.