# Thread: I face problem in ( Signifincant digits )

1. ## I face problem in ( Signifincant digits )

Hi all

I face problem in ( Signifincant digits )

sometimes in question want the answer 2 or 3 or 4 ..etc

for example :

Evaluate X to 4 significant digits in question If
log x = - 1.2543

or

Evaluate X to 5 significant ditis in
X = In ( 3.4562x 10 ^15 )

How I Find the solution by 5 significant or 2 or etc

2. $\log{x} = -1.2543$

$x = 10^{-1.2543} = 0.05568$ to four significant digits.

written in scientific notation, $x = 5.568 \times 10^{-2}$