$Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 60\ and\ 90\\can\ be\ divided\\\\
60:2\\
30:2\\15:3\\5:5\\\\
90:2\\
45:3\\
15:3\\5:5\\\\GCF=2*3*5=30\\\\Greatest\ common\ factor\ of\ 60\ and\ 90\ is\ equal\ to\ 30
$

4 0

3 years ago

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The digits 1, 7, and 8 and 2 copies of the digit 5 are all arranged to form a 5-digit integer. How many different integers can b

viktelen [127]

Step-by-step explanation:

You have 5 digits.Youdonot say if duplication is allowed. I will assume not

For the first digit you have 5 choices. One of the 5 digits is gone.

You now have 4 digits to choose from. You pick one. Now you have but 3 left.

The total answer if 5*4*3*2*1 = 120

3 0

3 years ago