Descending Order of Algebraic Expressions

CMAT 2025 · Quantitative Techniques & Data Interpretation · Medium · Simplification

What value comes in place of question mark (?) in the following statements and arrange them in descending order.

A. 59×(225.4−45.4)=(?)2\frac{5}{9} \times (225.4 - 45.4) = (?)^2 B. 1024×40+(20)2+0.5% of 9600+469=(?)3\sqrt{1024} \times 40 + (20)^2 + 0.5\% \text{ of } 9600 + 469 = (?)^3 C. 812÷162 of 323×256=(2)?8^{12} \div 16^2 \text{ of } 32^3 \times \sqrt{256} = (2)^? D. 1813+923−1013=123+?18\frac{1}{3} + 9\frac{2}{3} - 10\frac{1}{3} = 1\frac{2}{3} + ?

Choose the correct answer from the options given below :

  1. A.

    D > C > A > B

  2. B.

    C > A > B > D

  3. C.

    D > C > B > A

  4. D.

    C > D > B > A

Answer

D

Explanation

Evaluating each term: For A: 59×180=100=(?)2  ⟹  ?=10\frac{5}{9} \times 180 = 100 = (?)^2 \implies ? = 10. For B: 32×40+400+48+469=1280+400+48+469=2197=(?)3  ⟹  ?=1332 \times 40 + 400 + 48 + 469 = 1280 + 400 + 48 + 469 = 2197 = (?)^3 \implies ? = 13. For C: 812÷(162 of 323)×256=236÷(28×215)×24=236−23+4=217=2?  ⟹  ?=178^{12} \div (16^2 \text{ of } 32^3) \times \sqrt{256} = 2^{36} \div (2^8 \times 2^{15}) \times 2^4 = 2^{36 - 23 + 4} = 2^{17} = 2^? \implies ? = 17. For D: 1813+923−1013=1723=123+?  ⟹  ?=1618\frac{1}{3} + 9\frac{2}{3} - 10\frac{1}{3} = 17\frac{2}{3} = 1\frac{2}{3} + ? \implies ? = 16. Arranging in descending order: C(17)>D(16)>B(13)>A(10)C (17) > D (16) > B (13) > A (10).

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