In each of the following questions, select the missing number from the given responses.
let the missing term be y
here we can see that in first figure
78 = $$\surd(625) + \surd(676) + \surd(729)$$
and hence same pattern will follow in second figure
y = $$\surd(289) + \surd(324) + \surd(361)$$ = 54
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