Question

In each of the following questions the number series is given. One term of the series is denoted by x. You have to calculate of value of x and by using the value of x, you have to solve the following questions.

If  14     32       x      50        -13      86,  then, find the value of (10x + 5x – 20)?

A 75 Correct Answer Incorrect Answer
B 45 Correct Answer Incorrect Answer
C 85 Correct Answer Incorrect Answer
D 55 Correct Answer Incorrect Answer
E 65 Correct Answer Incorrect Answer

Solution

14 + 9 × 2 = 32  32 - 9 × 3 = 5 5 + 9 × 5 = 50 50 - 9 × 7 = -13 -13 + 9 × 11 = 86 Then, (10x + 5x – 20) = 10 × 5 + 5 × 5 – 20  = 50 + 25 – 20 = 55

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