Surds And Indices MCQ Set 4

Showing question 16 to 20 of total 27 MCQs

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Question No: 16

If 6^m=46656,

What is the value of 6^{m - 2}

1. 7776
2. 7782
3. 1296
4. 1290

Answer: C

Explanation

Question No: 17

(25)^7.5×(5)^2.5÷(125)^1.5=5^?

1. 9.7
2. 11.5
3. 12
4. 13

Answer: D

Explanation

Question No: 18

Given that 10^0.48 = x, 10^0.70 = y and x^z = y2, then the value of z is close to:

1. 1.45
2. 1.88
3. 2.9
4. 3.7

Question No: 19

If 5^a = 3125, then the value of 5^{(a - 3)} is:

1. 25
2. 125
3. 625
4. 1625

Question No: 20

If 3^{(x - y)} = 27 and 3^{(x + y)} = 243, then x is equal to:

1. 0
2. 2
3. 4
4. 6