IMO- Mathematics Olympiad Class 8: Questions 598 - 606 of 1029

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Question number: 598

» Exponents and Powers

MCQ▾

Question

Number of prime factors in (343)32×(700)12×1250 is

Choices

Choice (4) Response

a.

13

b.

11

c.

12

d.

14

Question number: 599

» Exponents and Powers

MCQ▾

Question

The solution of 3x6=19x , is________.

Choices

Choice (4) Response

a.

1

b.

4

c.

3

d.

2

Question number: 600

» Exponents and Powers

MCQ▾

Question

If 33×33÷323=34+a , then the value of a is

Choices

Choice (4) Response

a.

4

b.

1

c.

0

d.

2

Question number: 601

» Direct and Inverse Proportions

MCQ▾

Question

The ratio which (13ofRs6.33) bears to (1.3of1.55) is________.

Choices

Choice (4) Response

a.

1.04

b.

2.63

c.

2.00

d.

1.00

Question number: 602

» Direct and Inverse Proportions

MCQ▾

Question

A can do a work in 7 days. If B is 75 % more efficient than A, then in how many days can B do the same work?

Choices

Choice (4) Response

a.

3

b.

4

c.

5

d.

3.5

Question number: 603

» Exponents and Powers

MCQ▾

Question

If 5(xy)=25 and 5(x+y)=125 , then x is equal to________.

Choices

Choice (4) Response

a.

32

b.

52

c.

92

d.

12

Question number: 604

» Direct and Inverse Proportions

MCQ▾

Question

0.5 of a number equals 0.15 of another number. The ratio of the number is________.

Choices

Choice (4) Response

a.

3: 10

b.

3: 2

c.

10: 3

d.

2: 3

Question number: 605

» Exponents and Powers

MCQ▾

Question

The solution of 22x5=18x , is________.

Choices

Choice (4) Response

a.

2

b.

1

c.

3

d.

4

Question number: 606

» Exponents and Powers

MCQ▾

Question

If ax=by=cz and b=a2c , then x equals

Choices

Choice (4) Response

a.

y+z2yx

b.

2yzy+z

c.

2zxx+z

d.

2z+xxz

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