1. In the following question, select the missing number from the given series
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By: anil on 05 May 2019 02.18 am
The pattern followed is that in each row the number at the end is the square root of the product of first two. Eg :- $$sqrt{25 imes144}=sqrt{5 imes5 imes12 imes12}=5 imes12=60$$ $$sqrt{81 imes225}=sqrt{9 imes9 imes15 imes15}=9 imes15=225$$
Similarly, $$sqrt{49 imes289}=sqrt{7 imes7 imes17 imes17}=7 imes17=119$$ => Ans - (A)
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Similarly, $$sqrt{49 imes289}=sqrt{7 imes7 imes17 imes17}=7 imes17=119$$ => Ans - (A)