Can anyone tell me..

[taptapgrind]

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What is 10^(-5.45) and how to calculate it?

 

[myheart01]

What is 10^(-5.45) and how to calculate it?

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10^(-5.45) = about 10^(-5.5)
10^(-5.5) = 10^(-5) * 10^(-0.5)
= 1/10^5 * 1/10^0.5
= 0.00001 * 1/10^1/2
= 0.00001 * 1/root 10
= 0.00001 * root 10/10
= 0.00001 * 3.2/10 (root 10 = about 3.2)
= 3.2*10^(-6)

Answer is about 3.2*10^(-6) [FONT=&#48148] .

 

[taptapgrind]

I think I got it. I have to stare at it a bit longer to get used to it though.
Muchos Gracias! 😀

 

[allstardentist]

Ah~ I had a question like this on the real DAT where you had to estimate.