CMAT 2018 - Slot 1 Quantitative Aptitude Question 7
This is a detailed step-by-step solution for CMAT 2018 - Slot 1 Quantitative Aptitude Question 7. Understand the concept, common mistakes, and expert tips to solve similar questions in CMAT exam.
Quantitative Aptitude
Since balls of same color should come together, let us consider 3 red balls as one unit and 2 blue balls as one unit and 4 yellow balls as another unit.
So, we have a total of 3 different units which can be arranged in '3!' ways.
These 3 red balls can internally be arranged in '3!' ways.
Similarly the blue balls and yellow balls can be arranged internally in '2!' and '4!' ways respectively.
So, total number ways = 3! × 3! × 2! × 4!
= 6 × 6 × 2 × 24 =1728 ways