Question

    188        178       158      ?     

    88       38 What should come in place of question mark (?) in the following number series?
    A 108 Correct Answer Incorrect Answer
    B 138 Correct Answer Incorrect Answer
    C 128 Correct Answer Incorrect Answer
    D 118 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    188 – 10 = 178 178 – 20 = 158 158 – 30 =  128 128 – 40 = 88 88 – 50 = 38

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