10th Class Mathematics Real Numbers Question Bank Real Numbers

  • question_answer
    Dimensions of a rectangle are\[({{2}^{5}}\times 7)cm\]and\[(\text{2}\times {{\text{5}}^{\text{2}}}\times {{\text{7}}^{\text{3}}})cm\]. Express the area of the rectangle in prime factorization form.

    A)  \[\text{2}\times \text{5}\times \text{7c}{{\text{m}}^{\text{2}}}\] 

    B)         \[2\times 73c{{m}^{2}}\]

    C)  \[\text{26}\times \text{52}\times \text{74 c}{{\text{m}}^{\text{2}}}\]

    D)        \[\text{25}\times \text{52}\times \text{73c}{{\text{m}}^{\text{2}}}\]

    Correct Answer: C

    Solution :

     The dimensions of a rectangle are\[\Rightarrow \]and\[x=\frac{1740}{29}=60\]. Its area\[\Rightarrow \]                 \[140\times 605=11\times L.C.M.\]


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