Surds and Indices Questions for CAT

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20 free Surds and Indices questions

1EasyMCQ

Find the value of xx if 2x=322^x = 32

  1. A

    8

  2. B

    4

  3. C

    6

  4. D

    5

2EasyMCQ

Evaluate: 272/327^{-2/3}

  1. A

    1/91/9

  2. B

    1/31/3

  3. C

    1/271/27

  4. D

    33

4EasyMCQ

Determine the number of digits in the number 2401272401^{27} when expressed in base 7.

  1. A

    117

  2. B

    181

  3. C

    98

  4. D

    109

5EasyMCQ

Simplify: (23)2(2\sqrt{3})^2

  1. A

    12

  2. B

    6

  3. C

    8

  4. D

    9

7MediumMCQ

Solve for xx: 82x+132x1=20488^{2x+1} - 32^{x-1} = 2048.

  1. A

    114\dfrac{11}{4}

  2. B

    249125\dfrac{249}{125}

  3. C

    94\dfrac{9}{4}

  4. D

    53\dfrac{5}{3}

8MediumMCQ

The real root of the equation 34x+32x+130=03^{4x} + 3^{2x+1} - 30 = 0 is

  1. A

    12log3 ⁣(12932)\dfrac{1}{2}\log_3\!\left(\dfrac{\sqrt{129}-3}{2}\right)

  2. B

    log3 ⁣(1293)\log_3\!\left(\sqrt{129}-3\right)

  3. C

    12log3(129)\dfrac{1}{2}\log_3(129)

  4. D

    log3(5)\log_3(5)

9MediumMCQ

What is the value of: 33+233+233+\sqrt{33 + 2\sqrt{33 + 2\sqrt{33 + \cdots}}}

  1. A

    341\sqrt{34} - 1

  2. B

    34+1\sqrt{34} + 1

  3. C

    34+2\sqrt{34} + 2

  4. D

    342\sqrt{34} - 2

10MediumMCQ

If 6x+8+6x8=4(2+3)\sqrt{6x+8}+\sqrt{6x-8}=4(2+\sqrt{3}), then 12x+8\sqrt{12x+8} equals

  1. A

    2302\sqrt{30}

  2. B

    464\sqrt{6}

  3. C

    636\sqrt{3}

  4. D

    1010

11MediumMCQ

Simplify: (3+2)2(32)2(\sqrt{3} + \sqrt{2})^2 - (\sqrt{3} - \sqrt{2})^2

  1. A

    4√6

  2. B

    2√6

  3. C

    6

  4. D

    1

12MediumMCQ

Simplify: (3+1)(31)(\sqrt{3}+1)(\sqrt{3}-1)

  1. A

    2

  2. B

    1

  3. C

    3

  4. D

    0

13MediumMCQ

Evaluate: 272/327^{-2/3}

  1. A

    1/9

  2. B

    1/3

  3. C

    1/27

  4. D

    3

14MediumMCQ

The number of integral solutions for the equation (x+138x3)+(x+66x3)=1(x+13-8\sqrt{x-3})+(x+6-6\sqrt{x-3})=1 is?

  1. A

    3\leq 3

  2. B

    >3> 3 and 6\leq 6

  3. C

    >6> 6 and 9\leq 9

  4. D

    >9> 9

15HardMCQ

The sum of all real kk satisfying (125)k(115625)1/2=125(115625)1/k\left(\tfrac{1}{25}\right)^k \cdot \left(\tfrac{1}{15625}\right)^{1/2} = \tfrac{1}{25}\cdot\left(\tfrac{1}{15625}\right)^{1/k} is:

  1. A

    52\tfrac{5}{2}

  2. B

    12-\tfrac{1}{2}

  3. C

    72\tfrac{7}{2}

  4. D

    72-\tfrac{7}{2}

16HardMCQ

The sum of all real values of xx satisfying the equation 22x62x+8=02^{2x} - 6\cdot 2^{x} + 8 = 0 is

  1. A

    3

  2. B

    52\tfrac{5}{2}

  3. C

    12\tfrac{1}{2}

  4. D

    2

17HardMCQ

Simplify: 91/2+161/49^{1/2} + 16^{1/4}

  1. A

    5

  2. B

    7

  3. C

    6

  4. D

    8

18HardMCQCAT 2025

Determine the sum of all possible x satisfying 54x252x2+2x+12+52x+24=05^{4x^2} - 5^{2x^2 + 2x + 12} + 5^{2x + 24} = 0

  1. A

    2

  2. B

    1/2

  3. C

    3

  4. D

    5/2

19HardMCQ

If (a+bm)(a+b\sqrt{m}) is the positive square root of (451211)(45-12\sqrt{11}), where aa and bb are integers, and mm is a natural number, then the maximum possible value of (a+b+m)(a+b+m) is.

  1. A

    16

  2. B

    14

  3. C

    18

  4. D

    20

  5. E

    None of these

20HardMCQ

Simplify: 1227\sqrt{12} * \sqrt{27}

  1. A

    18

  2. B

    12

  3. C

    15

  4. D

    9√3

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