Question

how many times does the digit 7 occurs if we write all the numbers from 1 to 200 ?
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Answer 1

Answer with Step-by-step explanation:

These are the natural numbers from 1 to 100 with the digit 7:

7 (1 occurrence)

17 (1 occurrence)

27 (1 occurrence)

37 (1 occurrence)

47 (1 occurrence)

57 (1 occurrence)

67 (1 occurrence)

70 (1 occurrence)

71 (1 occurrence)

72 (1 occurrence)

73 (1 occurrence)

74 (1 occurrence)

75 (1 occurrence)

76 (1 occurrence)

77 (2 occurrences)

78 (1 occurrence)

79 (1 occurrence)

87 (1 occurrence)

97 (1 occurrence)

107 (1 occurrence)

117 (1 occurrence)

127 (1 occurrence)

137 (1 occurrence)

147 (1 occurrence)

157 (1 occurrence)

167 (1 occurrence)

170 (1 occurrence)

171 (1 occurrence)

172 (1 occurrence)

173 (1 occurrence)

174 (1 occurrence)

175 (1 occurrence)

176 (1 occurrence)

177 (2 occurrences)

178 (1 occurrence)

179 (1 occurrence)

187 (1 occurrence)

197 (1 occurrence)

All in all, there are 40 appearances of the digit 7 from the numbers 1 to 200.