Question

If ${\log }_{10}p=-9.23$, then the correct statement(s) is/are

• A. characteristic is $-9$
• B. mantissa is $0.77$
• C. number of zeroes after decimal before any significant digit in $p$ is $9$
• D. number of cyphers after decimal before any significant digit in $p$ is $10$

Answer 1

Answer: (B), (C)

The correct options are
B mantissa is $0.77$
C number of zeroes after decimal before any significant digit in $p$ is $9$

${\log }_{10}p=-9.23$
Now,
$-9.23=-10+0.77$
Characteristics is $-10$
Mantissa is $0.77$

The number of zeroes after decimal before any significant digit in $p$
$=|-10+1|=9$
Number of cyphers (zereos) after decimal before any significant digit in $p$ is $9.$