Interesting observation

Interesting Observation ! 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 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 in Billion) . And Letter 'C' Does Not Appear Anywhere in the Spellings Of Entire English Counting. "C" Appears First time in crore !! . . Moral : Everyone Has To Wait For His Turn..