I have an apple tree , number of apple in this tree get doubles every week. On 30th week , the tree gets completely filled with apples :-) Can you tell me , on what week does my tree is half covered with apples ?
All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two. Can you tell me how many flowers I have?
Can you complete the sequence? 192, 021, 222, 324, 252, 627, 2__, 9__?
Twice ten are six of us, Six are but three of us, Nine are but four of us; What can we possibly be? Would you know more of us? Twelve are but six of us, Five are but four, do you see? What are we?
Forwards I am heavy, backward I am not. What am I?
Here is a conversation between a couple who both are software professionals. Husband: Hey! What is your date of birth? Wife Replied Angrily: It is 591062400 Husband after doing some calculations replied, "Got It". What is the DOB of the wife?
Decode below rebus D N A T S , D
What is so fragile that saying its name breaks it?
Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?
What month of the year has 28 days?
How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.