A person forgot his 5 digit pin code, but he remembers some hints. 1st digit is square of 2nd digit. Sum of 2nd and 3rd digit makes 10. 4th digit is 2nd digit+1. Sum of 5th and 3rd digit makes 14. Sum of all 5 digits = 30 Can you … [Continue reading]
Missing numbers in series

Find the missing numbers in this series: 4, 10, 22, 46, _____, _____, 382 … [Continue reading]
How many Squares in this picture #2

You might want to try How many squares - Part 1 before you attempt these 3 puzzles. 1.) How many squares are in this picture ? … [Continue reading]
Girl and the box
A girl bought a box when she was 20, She puts $250 in the box on every birthday And her sister takes out $50 from the box on her birthday. Girl died when she was 60 and when the box was opened there were $500 remaining in the box. How is it … [Continue reading]
I am a 8 Letter Word
I am a 8 Letter Word. I am kept Secret from Everyone. My 2nd, 3rd, 4th Letter Spell an Animal. My 4th, 5th, 6th, 7th, 8th Letter is a Weapon. My 1st, 2nd, 8th Letter is used for Writing an Exam. My 3rd, 4th Letters are the Same. "Guess What … [Continue reading]
How many games to determine a champion?
There are 97 baseball team participating in a tournament. The champion is chosen by the usual elimination scheme. That is, all teams are divided into pairs, and two teams of each pair play against each other. The loser of each pair is eliminated, and … [Continue reading]
River crossing: she-goat, wolf and cabbage
A farmer is returning from market, where he bought a she-goat, a wolf and cabbage. On the way home he must cross a river. His boat is little, allowing him to take only one of the three things. He can't keep the she-goat and the cabbage together … [Continue reading]
Deadly choice puzzle
Once a man was caught for a minor offense and was presented in king Akbar's darbaar Akbar wanted to test the man and said: "You must give me a statement. If it is true, you will be killed by lions. If it is false, you will be killed by trampling of … [Continue reading]
Why manholes are round?

Why manhole covers are round in shape then square and any other shape? … [Continue reading]
0.999… = 1 #55

0.9999999........ = 1, true or false? … [Continue reading]
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