What is 1.96 billion in scientific notation?

Answer 1

Lessee here,

1 thousand is 1000 which is 103

and

1 million is a thousand thousands, which is 1,000,000 which is 106

and

1 billion is a thousand millions, which is 1,000,000,000 which is 109

so...

1.96 billion is 1.96 x 109, which is the same as 1.96E9