Question 38

Select the missing number from the given responses.
121 81 49
100 64 36
15 16 25
? 31 41

Solution

1st row : 121 + 49 = 170

and $$(81\times2)+8=170$$

2nd row : 100 + 36 = 136

and $$(64\times2)+8=136$$

3rd row : 15 + 25 = 40

and $$(16\times2)+8=40$$

4th row : $$(31\times2)+8=70$$

=> $$x+41=70$$

=> $$x=70-41=29$$

=> Ans - (B)

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