CAT 2018 Permutations and Combinations Question (Medium)

Question

In a tournament, there are 43 junior level and 51 senior level participants. Each pair of juniors play one match. Each pair of seniors play one match. There is no junior versus senior match. The number of girl versus girl matches in junior level is 153, while the number of boy versus boy matches in

Optima Learn · Accepted Answer

Correct Answer The answer is 1098 Step 1 Juniors 43 participants, with 153 girl girl matches Let junior girls G, boys B 43 G G G 1 2 153 G 18, B 25 Seniors 51 participants, with 276 boy boy matches Let senior boys b, girls g 51 b b b 1 2 276 b 24, g 27 Step 2 Total boy girl matches no cross-level pl

CAT 2018 Permutations and Combinations — Previous Year Question

CAT 2018

Quantitative

Permutations and Combinations

Medium

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