webassign.net k 7.3 Need Help? Read n O 0/1 points I 7.3.024 Radar detectors are

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webassign.net k 7.3 Need Help? Read n O 0/1 points I 7.3.024 Radar detectors are either powered by their own battery or plug into the cigarette lighter socket. All radar detectors come in two models no-frills and fancy. In addition, detectors powered by their own batteries detect either radar or laser, or both, whereas the plug-in types come in models that detect either radar or laser, but not both. How many different radar detectors can you buy? choices Need Help? or saved Professor Easy's final examination has 9 true-false questions followed by 3 multi questions, you must select the correct answer from a list of four. How many answer sheets are possiblei ple-choice questions. In each of the multiple-choice 6 choices Need Help? Read it

Explanation / Answer

2 models for radar detectors : no frills and fancy

Detectors powered by their own batteries : radar,laser or both

Not powered by their own batteries : radar or laser alone, not both

We have a total of 5 radar detectors :
powered and detecting radar
powered and laser
powered and both
not powered and radar
not powered and laser

And like this, we have two types, no frills or fancy

So,
5 * 2

10 ----> ANS

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9 T/f
can be answered in 3*3*3*... 9 times --> 3^9 ways
3 ways for each question because you can answer t/f/leave unattempted

3 MCQ's of 4 options each can be answered in 5*5*5 = 5^3 ways

Total no of ways to submit the paper is : '

3^9 * 5^3

2460375 ---> ANS

If didnt work,
then try 2^9 * 4^3
32768

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