Question

Significant figures in an
expression are:
(a) all the digits
(b) all the accurately known digits
(C) all the accurately known digits
and the first doubtful digit
(d) all the accurately known and
all the doubtful digits​

Answer 1

Answer:

B

Explanation:

For example in the number 400000 the significant digit is only one

while in 5.00 the significant digits are three

so B is correct