Question

Q Insert the missing number.

13	54	?
7	45	32
27	144	68

A. 42
B. 6
C. 36
D. 4
E. None of these

Answer 1

Dear student
$$\begin{gathered} Consider,firstcolumn \\ Proceedinthefollowingway: \\ 13+7\times 2=13+14=27 \\ Consider,secondcolumn \\ Proceedinthefollowingway: \\ 54+45\times 2=54+90=144 \\ Consider,thirdcolumn \\ Proceedinthefollowingway: \\ ?+32\times 2=?+64=68\Rightarrow ?=68-64=4 \\ So,mis\sin gnumberis4 \end{gathered}$$

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