Which Number is the odd one out?

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

What is the word or phrase?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

How far can you walk into the woods?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Prove that twice of ten is the same as twice of eleven.

Which five letter word can be added at the end of below word to form a
valid word?

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An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

What came first, the chicken or the egg?

What you cannot hold but it is yours?