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Mathematics
Problem
Which one of the following relations correctly describes three numbers
x
,
y
,
z
x,\,y,\,z
x
,
y
,
z
that occur consecutively in an arithmetic progression? a)
x
=
y
+
z
2
x = \dfrac{y+z}{2}
x
=
2
y
+
z
b)
y
=
x
+
z
2
y = \dfrac{x+z}{2}
y
=
2
x
+
z
c)
y
=
x
+
z
3
y = \dfrac{x+z}{3}
y
=
3
x
+
z
d)
y
=
z
−
x
y = z - x
y
=
z
−
x
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