x,y,z, and w are integers.the expression X-Y-Z is even and the expression Y-Z-Wis odd. If x is even what must be true?
a)w must be odd
b)Y-z must be odd
c)w must be odd
d)z must be odd
How many words can be formed using the letters of the word DAUGHTER, so that all the vowels occurs together?
1)8640 2)2880 3)6720 4)4320
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