0.00909 has three significant digits.
Three.
15100 000 000 000 000
It has only one significant digit, so it remains unchanged.
The number 120 000 000 000 000 000 is 120 quadrillion.
To determine the number of digits in 1 billion = 1, So, 10 × 1 , 000 , 000 , 000 × 1 , 000 , 000 10×1,000,000,000×1,000,000 This equals 10 quintillion
1 000 000 (1 million)
Two
The number, 22 billion, has 2 significant digits: 22.
15100 000 000 000 000
It has only one significant digit, so it remains unchanged.
something like, 1.00*10^6, depending on how many significant digits you want.
The number 120 000 000 000 000 000 is 120 quadrillion.
To determine the number of digits in 1 billion = 1, So, 10 × 1 , 000 , 000 , 000 × 1 , 000 , 000 10×1,000,000,000×1,000,000 This equals 10 quintillion
000
60 000 000.
1 000 000 (1 million)
Another Answer: Googol = 10 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 or 10^100 Googolplex = 10googol Googolplex would have a Googol of zeros after a 1, which is to say the number of digits in a Googolplex = Googol+1 digits. You cant even fit a googolplex grains of salt in this universe but maybe in another larger one and you would find duplicates of yourself
29 792 458 in significant figures is 29 790 000, and written in scientific notation is 2.979*10^7