Question

what is scientific notations??​

Answer 1

Scientific notation is a way of expressing numbers that are too big or too small to be conveniently written in decimal form. It is commonly used by scientists, mathematicians and engineers, in part because it can simplify certain arithmetic operations. 
For example, instead of writing 0.0000000056, we write 5.6 x 10-9.

Hope it will help you ....

Answer 2

those nations which can not do any thing themselves