Praveen
CAT Preparation Community 9y ago
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Praveen
CAT Preparation Community 9y ago
sakthi VEL 9y ago
YUGAL BADLANI 9y ago
6C4 x 4!
Twinkle Soni 9y ago
3,1,1,1: 6C3*4!
2,2,1,1: (6C2*4C2*4!)/2
Add both.
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