In a building there are 100 rooms. Peter was asked to paint numbers 1 to 100 on the doors. If so, how many times will peter have to paint the number seven?
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6
Answer:
20times will Peter have to paint the number seven.
Answered by
1
Answer:
11 times
that is - 7 , 17 , 27 , 37 , 47 , 57 , 67 , 77 , 87 , 97
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