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How would i set up this problem? How many different 4-digit numbers can be formed using the digits 2, 4, 5, 6, and 7 so that no digits repeat & the number is divisible by 4? In an xy plane, a line contains (4,n) (n,8), and (2,4). what is a possible value of n?
A) 2
B) 4
C) 6
D) 8? Calculate the mass of 2.63 x 1014 molecules of C12H22O11.? Quick Calculus help?