#3 OLYMPIAD/JEE CHALLENGES
PROBLEMEight celebrities meet at a party. It so happens that each celebrity shakes hands withexactly two others. A fan makes a list of all unordered pairs of celebrities who shookhands...
CMI 2021 COMBINATORICS PYQ
You have to form a 7 letter password using 10 digits and 26 letters. Only lower case letters as allowed. For example, 01x01xb, 11bcaa0, etc. are valid passwords.How many passwords can you make with...
OLYMPIAD CHALLENGES #2
QUESTION 2)5 boys and 5 girls go to an exhibition and the cost of a ticket is Rs 50. Each girl has a fifty rupee note while each boy has hundred rupee note they stand in a queue at the...
OLYMPIAD CHALLENGES 01
How many north east lattice paths(consider shortest path) are there from (3,2) to (18, 14) which does not cross the green line (however it can touch the green line) shown in the figure, {...
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