You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

What is the word or phrase below?
R | E | A | D

Can you find the 09 errors in the picture below?

What do you see in the given picture?

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?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

How is the moon similar to a dollar?

what does this picture(rebus) riddle means ?