Interesting but its true!

Hi Friends,

SOMETHING VERY INTERESTING

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

Just Try......... ......... ........ except
C ..for...CASH !!