Published by:
CGP EDU Academic Team
Published on: August 14, 2026
There are 7 identical white balls and 3 identical black balls. The number of distinguishable arrangements in a row of all the balls, so that no two black balls are adjacent is
A
120
B
C
56
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Given number of white balls 
and number of black balls 
Here, B-B-B-B-B-B-B-B
are the places in row where black balls can be placed.
So, number of arrangements 
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