isi-entrance 2023 Q23

isi-entrance · India · UGA Permutations & Arrangements Combinatorial Proof or Identity Derivation
Three left brackets and three right brackets have to be arranged in such a way that if the brackets are serially counted from the left, then the number of right brackets counted is always less than or equal to the number of left brackets counted. In how many ways can this be done?
(A) 3
(B) 4
(C) 5
(D) 6 
Three left brackets and three right brackets have to be arranged in such a way that if the brackets are serially counted from the left, then the number of right brackets counted is always less than or equal to the number of left brackets counted. In how many ways can this be done?\\
(A) 3\\
(B) 4\\
(C) 5\\
(D) 6
Paper Questions
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