Interesting brain teasers, logical puzzles, mental riddles, whatsapp puzzles, facebook viral puzzles all in one place with answers. Puzzle #69 – Penguin-Zebra-Cow Puzzle Answer Answer is 86. A single penguin eqauals 4. A single zebra equals 6. Two cows equal a 20. Therefore a single cow equals a 10. Therefore the final equation will look [...]