Question

Round of 0.745250 correct to four significant digit is​

Answer 1

Given : 0.745250

To  Find : Round of correct to four significant digit  

Solution:

All non-zero digits are significant.

The leftmost nonzero digit is the first or most significant figure. 7

If there is a decimal point, the rightmost digit is the last or least significant figure  0

If there is no decimal point explicitly shown, the rightmost non-zero digit is the least significant figure ( not a case here )

All digits between the most significant figure and the least significant figure are significant.  

745250   are 6 significant digits

5th significant digit is 5 hence 4th significant digit need to increase by 1

Hence 0.7453  

0.7453  

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