Answer:
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Step-by-step explanation:
what is the question
Answer: D. 21ways.
Step-by-step explanation:
This is based on selection, fixing two '3' numbers into 5numbers to make it 7 numbers can be done in 7C2 ways.
Generally, nCr = n!/(n-r)!r!
7C2 = 7!/(7-2)!2!
=7!/5!2!
=7×6×5!/5!×2!
=7×6/2
=21ways (D)
Commutative property of multiplication
<span>1/4's equivalent in lowest terms is 1/4.</span>
<h2>Question :</h2>
<h3>Solve the proportion : </h3>

<h2>Answer :</h2>






Hence, The solution is 