(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

2. Relevant equations

N=N_{0}e^{-λt}

3. The attempt at a solution

I can do all of part (a) but I'm stuck on part (b).

I don't even know where to begin. I just have no idea what to make of this question.

Could someone prod me in the right direction ?

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# Homework Help: Radioactive Decay - Tricky

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