Directions (Set of 2 questions): In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.
5
|
4
|
3
|
8
|
7
|
1
|
6
|
2
|
9
|
38
|
15
|
?
|
Solution
In each column, the end is equal to the sum of middle number to the product of first and third number.
Eg.: $(5 \times 6) + 8 = 38$
And $(4 \times 2) + 7 = 15$
Similarly, $(3 \times 9) + 1 = 28$