Consider the table given below in which the numbers bear certain relationship among themselves along the rows:

44 21 15

38 X 23

40 23 17

Which one of the following numbers is the missing number indicated above by X?

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Solution

The correct option is B 19
The thing to be careful about here is that the numbers bear a certain relationship among themselves along the rows; not columns. So, as much as 21 seems like the right option, it is not.

The sum of the three numbers in a row will be equal to 80.

Sum of numbers in 1st Row, 44+21+15 = 80

Sum of numbers in 3rd Row, 40+23+17 = 80

So, the sum of numbers in the 2nd row should also be 80.
X = 80 - (38+23) = 19

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Similar questions

\begin{matrix} 44 & 21 & 15 38 & X & 23 40 & 23 & 17 \end{matrix}

Given below are marks obtained by $20$ students in Math out of $25$ .

$21, 23, 19, 17, 12, 15, 15, 17, 17, 19, 23, 23, 21, 23, 25, 25, 21, 19, 19, 19$

Prepare a frequency distribution table for the given data.

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23, 51, 17

What is the number which when divided by 38 gives the quotient 23 and remainder 17?

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