Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Which is faster, Heat or Cold ? Explain.

Can you quickly find which two matchstick figures are identical?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

What work can one never finish?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

A man dies of old age on his 25 birthday. How is this possible?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?