SOLUTION: Write 4^20 x 5^42 in scientific notation

Question 939580: Write 4^20 x 5^42 in scientific notation
Found 2 solutions by josgarithmetic, Alan3354:
Answer by josgarithmetic(39626) (Show Source): You can put this solution on YOUR website!

Now want antilog of 53.44.
What is ?

but only ONE significant figure is allowed because the two factors originally each were only one significant figure..

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Write 4^20 x 5^42 in scientific notation
==========
= 2^40*5^40*5^2
= 10^40*25
= 2.5*10^41

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