2008 General Studies, all questions
UPSC Prelims 2008 · General Studies
Question 149: Basic Numeracy
There are two identical red, two identical black and two identical white balls. In how many different ways can the balls be placed in the cells (each cell to contain one ball) shown above such that balls of the same colour do not occupy any two consecutive cells?
a15
b18
c24
d30
Our copy of this question lacks the figure, so it can be read but not answered.
Source: UPSC, Civil Services (Preliminary) Examination 2008, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.