Alphabets Vs Numbers
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 the spellings of entire
English Counting.