v Letters a, b, c, and d do not appear anywhere in the spellings of 1 to 99.
v Letter ‘d’ comes for the first time in Hundred.
v
v Letter ‘a’ comes for the first time in Thousand.
v Letters ‘b’ and ‘c’ do not appear anywhere in the spellings of 1 to 999,999,999
v Letter ‘b’ comes for the first time in Billion.
v Letter ‘c’ does not appear anywhere in the spellings of entire English counting.
- Collected by : Sri Ramya. VIII - B
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