IMO- Mathematics Olympiad Class 8: Questions 181 - 188 of 1029

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Question number: 181

» Square and Square Roots

MCQ▾

Question

A number is multiplied by 23 itself and then 10 is subtracted from the product. If the final result is 590, then find the original number.

Choices

Choice (4) Response

a.

60

b.

30

c.

50

d.

36

Question number: 182

» Cube and Cube Roots

MCQ▾

Question

Three numbers are in the ratio of 4: 3: 2. The sum of their cubes is 21384. The numbers are________.

Choices

Choice (4) Response

a.

24:18:12

b.

15: 30: 45

c.

20:15:10

d.

6: 12: 18

Question number: 183

» Square and Square Roots

MCQ▾

Question

If 3(a31a3)3=2 , then (a3+1a3)=_____.

Choices

Choice (4) Response

a.

±103

b.

103

c.

103

d.

Question does not provide sufficient data or is vague

Question number: 184

» Cube and Cube Roots

MCQ▾

Question

The value of (91125216)26 is ________.

Choices

Choice (4) Response

a.

8.5

b.

4.00

c.

2.5

d.

7.5

Question number: 185

» Cube and Cube Roots

MCQ▾

Question

If 25a4=a6 , then a3 is equal to________.

Choices

Choice (4) Response

a.

5a3

b.

15a3

c.

15a2

d.

5a2

Question number: 186

» Square and Square Roots

MCQ▾

Question

If 13313+0.0013=x , then the value of x is________.

Choices

Choice (4) Response

a.

30.2

b.

22.7

c.

11.1

d.

24.7

Question number: 187

» Cube and Cube Roots

MCQ▾

Question

The cube of a number x is four times of x then find x where x0andx2.

Choices

Choice (4) Response

a.

4

b.

2

c.

1

d.

0

Question number: 188

» Cube and Cube Roots

MCQ▾

Question

a3×b12×c21c9×b63 =

Choices

Choice (4) Response

a.

ab2c3

b.

ab2c2

c.

ab3c4

d.

ab2c4

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