Question

If log10 3 = 0.4771 , then the number of digits in (81) ^ 21 is.​

Answer 1

Step-by-step explanation:

log

10

3=0.477

⇒3=10

0.477

⇒3

40

=10

(0.477)

×40

3

40

=10

0.477×40

=10

19.080

=10

19.1

∴There are 19 digits

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