1.

If k = (k_1, k_2, k_3, ...., k_n) in I and k_1k_2k_3 + k_2k_3k_4 + k_3k_4k_5 + .... + k_(n-2) k_(n-1) k_n = 0 Then minimum how many entities i.e.k_i (i = 1,2,3, .....) must be zero? If there are total 12 terms in the above expression :

Answer»

3
4
6
`"^nC_3`

ANSWER :B


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