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Mathematics
The common difference of an AP in which there are ' n ' AM's between a and r.
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Q. The common difference of an AP in which there are ' $n$ ' AM's between $a$ and $r$.
Progressions
A
$\frac{n}{2}(a+r)$
B
$\frac{n}{2}(2 a+n r-r)$
C
$\frac{a\left(r^n-1\right)}{r-1}$
D
$\left(\frac{b}{a}\right)^{\frac{1}{n+1}}$
Solution:
$\frac{a-r}{n+1}$