Trending Puzzle : Hour Glass Problem : How can you calculate 9 minutes?

## Can you solve this interesting number puzzle?

If 16 ÷ 4 = 74

21 ÷ 7 = 33

81 ÷ 9 = 99

Then 55 ÷ 5 = ??

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**If you can solve any 3 of these 5 puzzles, you have got a great IQ**