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    Question

    If  14,     32,       x,      50,       

    -13,      86,  then, find the value of (10x + 5x – 20)? 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.
    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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