Logic Riddles

Logic riddles with answers involve looking at situations and making judgements about them by ruling out impossibilities. If you like solving maths puzzles, you will most probably like logic riddles as well.

Japanese Ship Thief

A Japanese ship was en route in the open sea. The Japanese captain went for a shower removing his diamond ring and Rolex watch on the table. When he returned, his valuables were missing. The captain immediately called the five suspected crew members and asked each one where and what he was doing for the last 15 minutes.

The Filipino cook in a heavy overcoat said, “I was in fridge room getting meat for cooking.”

The Indian Engineer with a torch in hand said, “I was working on generator engine.”

The Sri Lankan seaman said, “I was on the mast (top of the ship) correcting the flag which was upside down by mistake.”

The British radio officer said, “I was messaging to company that we are reaching the next port in 72 hours. From now that is Wednesday morning at 10 AM.

The British navigation officer said, “I am on night watch, so sleeping in my cabin.”

The captain caught the thief who apparently lied. So who is the thief?

Riddle Answer

Cookie Problem

In a cookie jar, there are ten butter cookies and ten chocolate-chip cookies. Tom sneaks over to the cookie jar in the middle of the night and tries to figure out:

  • How many cookies do I need to take out of the jar if I want to make sure to get at least two of each kind?
  • How many cookies do I need to take out of the jar if I want to make sure to get at least two butter cookies?
Riddle Answer

Romantic Candlelight Dinner

A man lights two candles and begins a romantic candlelight dinner with his wife. The candles are of equal length, but one candle is thicker than the other.

The thick candle is designed to last for 6 hours while the thin candle is designed to last for 3 hours.

At the end of the dinner, the thick candle is twice as long as the thin candle. How long did the dinner last?

Riddle Answer