Instructions
In the following question, select the odd number pair from the given alternatives.
Solution
The pattern followed is = $$n(n-1)$$
(A) : $$11\times(11-1)=110$$
(B) : $$9\times(9-1)=72$$
(C) : $$7\times(7-1)=42$$
(D) : $$5\times(5-1)=20\neq30$$
=> Ans - (D)
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