Answer and Explanation :
On a calculator display, E (or e) stands for exponent of 10.
It is always followed by another number, which is the value of the exponent.
1) The number 8.64E9 appears on a calculator.
In standard notation, this number is written as
2) The number 8.64E14 appears on a calculator.
In standard notation, this number is written as
3) The number 8.64E11 appears on a calculator.
In standard notation, this number is written as
4) The number 8.64E13 appears on a calculator.
In standard notation, this number is written as