CAT Exam Model Paper 4 with solutions for free online practice

Question : 30 of 60

Marks: +1, -0

Four boxes are labeled as A, B, C and D. Each box contains three balls - one red, one blue and one green. In how many ways can a person pick 2 red and 3 blue balls?

Validate

Solution:

Required number of ways =

^ { 4 } { C } _ { 2 } × ^ { 4 } { C } _ { 3 } = 6 × 4 = 24

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