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# 5 hard riddles and answers

Riddle 1.

Alone I am 24th, with a friend I am 20.
Another friend and I am unclean.
What am I?

Riddle 2.

A window cleaner is cleaning a window on the 25th floor of a skyscraper when, suddenly, he slips and falls. He has no safety equipment and nothing to soften his fall, and yet he is not hurt. How can this be?

Riddle 3.

16
06
68
88
?
98

What is the ‘?’?

Riddle 4.

Many have heard me, but nobody has seen me, and I will not speak back until spoken to.
What am I?

Riddle 5.

1
11
21
1211
111221
312211

What is the next number in the sequence?

Scroll down to find out answers of these riddles and brainteasers.

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1. The letter ‘X’ . It is the 24th letter of the alphabet, XX in Roman numerals is 20, and XXX is a label for movies that are inappropriate (unclean).
2. He was inside cleaning windows.
3. The ‘?’ is ‘L8′. All of the numbers, when read upside down, are the numbers 86 – 91.
4. An echo.
5. The next number it: 13112221. Each number describes the previous number. Starting with 1, the second line describes it 11 (one 1). Then the third line describes 11 as 21 (two 1’s). Then the fourth line describes 21 as 1211 (one 2, one 1). This is the pattern.