Choose the correct options for the following questions.
The (a)Ms between $\sqrt{2}$ and $3\sqrt{2}$ is
Difficulty: Easy
A:
$2\sqrt{2}$
B:
$-2\sqrt{2}$
C:
$4\sqrt{2}$
D:
$\sqrt{2}$
If A is the (a)M between the two numbers a and b, then A-a is equal to
Difficulty: Easy
A:
a-A
B:
A+a
C:
A-b
D:
b-A
The (a)M between $a_{n-1}$ and $a_{n+1}$ is:
Difficulty: Easy
A:
a+b/2
B:
$a_{n+1}-a_{n-1}$
C:
$\frac{a_{n+1}-a_{n-1}}{2}$
D:
$\frac{a_{n-1}-a_{n+1}}{2}$
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