7th Class Mathematics Exponents and Power Question Bank Exponents and Powers

  • question_answer
    State T for true and T' for false.
    (P) If x and y are non-zero rational numbers and m is a positive integer, then \[{{x}^{m}}\times {{y}^{m}}={{(xy)}^{2m}}\] and \[{{x}^{m}}\div {{y}^{m}}={{\left( \frac{x}{y} \right)}^{1}}.\]
    (Q) Standard form of 38000000 is\[3.8\times {{10}^{7}}\].
    (R) The base and power in \[{{(-16\times 2)}^{4}}\]is \[-32\] and 4 respectively.
    (S) \[{{6}^{2}}\] is greater than \[{{2}^{6}}\].

    A)
    (P) (Q) (R)  (S)
    T   F    F    T

    B)
    (P) (Q) (R)  (S)
    F   T   T    F

    C)
    (P) (Q) (R)  (S)
    F   T   F   T

    D)
    (P) (Q) (R)  (S)
    F   T    F

    Correct Answer: B

    Solution :

            Not Available


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