New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    In the following questions, two equations numbered I and II are given. You have to solve both the equations and give answer.

    I. x³=  ((4)5+ (15)³)/(3)4

    II. 8y³=(-13)3÷ √1521+ (3y)³ 
    A If x ≥ y Correct Answer Incorrect Answer
    B If x ≤ y Correct Answer Incorrect Answer
    C If x > y Correct Answer Incorrect Answer
    D If x < y Correct Answer Incorrect Answer
    E If x = y or relationship between x and y cannot be established Correct Answer Incorrect Answer

    Solution

    I. x³=  ((4)5 + (15)³)/(3)4  x³=  (1024+3375)/81 = 4399/81  = 54 x³=54  x= ∛54  II. 8y³= (-13)3 ÷ √1521+ (3y)³ 8y³= -2197 ÷39 + 27y³ y³=  56/19 y= ∛(56/19)  Hence, x > y

    Practice Next

    Relevant for Exams: