If log 2 = 0.30103, the number of digits in $2^{64} $is:
18
19
20
21
Explanation:
$\log_(2^{64})$=$64 \times log 2$
=$(64 \times 0.30103)$
=19.26592
Its characteristic is 19.
Hence then number of digits in $2^{64}$ is 20.
$\log_(2^{64})$=$64 \times log 2$
=$(64 \times 0.30103)$
=19.26592
Its characteristic is 19.
Hence then number of digits in $2^{64}$ is 20.