Can you name some countries which do not have the alphabet 'A' in them?
How many times can you subtract the number 5 from 25?
what does this picture(rebus) riddle means ?
The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be? (3 possible solutions).
Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?
Given that (78)^9 = 6 And (69)^4 = 11 Can you find out (99)^2 =? (Note: This is Logical, not Mathematical)
Can you decipher the two rows to find the hidden word?
Find the next number in the series 12, 20, 40, 72, 116, 172 ?
Can you identify if it's a murder or a suicide ?
Can you find the 09 errors in the picture below?
John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.