Question

Which number is written in scientific notation?

6x10^11
12x10^-8
0.2x10^5
8x7^2

Answer 1

Answer:
`6*10^(11)`

Explanation:

We know that the scientific notation is a technique to write a very large or a very small number in the product of a decimal form of number [generally between 1 and 10]and powers of ten.

`6*10^(11)\\\text{ It is in scientific form}\\\\12*10^(-8)\\\text{It is not in scientific form, since} 12 >9\\\\0.2*10^5\\\text{It is not in scientific form, since }0.2<1\\\\8*7^2\\\text{ It is not in scientific form, since power of 10 is not there}`

Hence, the number written in scientific notation is
`6*10^(11)`

Answer 2

For this case, the first thing you should know is that a number in scientific notation is a number of the form:

`a * 10 ^ b`
Where,
a: is a number between 1 and 10
b: is the exponent of the scientific notation.
We have then that the number that is in scientific notation written correctly is:

`6x10 ^ {11}`
Answer:

`6x10 ^ {11}`