Question 36
In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.
Solution
The number at the middle is twice the sum of number at the vertices.
Eg :- $$(4+9+6)\times2=19\times2=38$$
and $$(8+11+9)\times2=28\times2=56$$
Similarly, $$(12+11+13)\times2=36\times2=72$$
=> Ans - (A)
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