Do you Know..................?

This is awesome - I bet you didn't know this...


Letters 'a', 'b', 'c' & 'd' do not appear anywhere in the spellings of 1 to 99


(Letter 'd' comes for the first time in Hundred)


Letters 'a', 'b' & 'c' do not appear anywhere in the spellings of 1 to 999


(Letter 'a' comes for the first time in Thousand)


Letters 'b' & 'c' do not appear anywhere in the spellings of 1 to 999,999,999


(Letter 'b' comes for the first time in Billion)


And


Letter 'c' does not appear anywhere in in the spellings of entire English Counting


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