Are They In Sequence? Unit, Ten, Hundred, Thousand, Ten Thousand, Hundred Thousand, Million, Ten Million, Hundred Million, Billion, Ten Billion, Hundred Billion, Thousand Billion, Trillion, Ten Trillion,.....?

1   Unit
10   Ten
100   Hundred
1000   Thousand
10,000   Ten Thousand
1,00,000   Hundred Thousand or 1 lakh
10,00,000     Thousand thousand or 10 lakhs or 1 million
100,00,000    Hundred Lakhs or 10 million or 1 crore
1000,00,000   Thousand lakhs or 100 million or 10 crore
10000,00,000  Ten thousand lakhs or 1000 million or 100 crore or 1 billion

1   Unit
10   Ten
100   Hundred
1000   Thousand
10,000   Ten Thousand
1,00,000   Hundred Thousand or 1 lakh
10,00,000     Thousand thousand or 10 lakhs or 1 million
100,00,000    Hundred Lakhs or 10 million or 1 crore
1000,00,000   Thousand lakhs or 100 million or 10 crore
10000,00,000  Ten thousand lakhs or 1000 million or 100 crore or 1 billion

They in sequence are up through a hundred million.

In some countries, a billion is a thousand million. In other countries a billion is a thousand thousand million.

Some places a trillion is a thousand billion--in which case you've named the same number twice. Other places, a trillion is a million billion--in which case there is a factor of 10³ between thousand billion and trillion.