IMO- Mathematics Olympiad Class 8: Questions 503 - 510 of 1029

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Question number: 503

» Direct and Inverse Proportions

MCQ▾

Question

Equation can do a piece of work in 50 days. He works at it for 5 days and then Equation alone finishes the work in 30 days. The two together could have completed the work in ________.

Choices

Choice (4) Response

a.

17.5 days

b.

17 days

c.

18 days

d.

17.2 days

Question number: 504

» Exponents and Powers

MCQ▾

Question

Number of prime factors in Equation is

Choices

Choice (4) Response

a.

3

b.

4

c.

2

d.

6

Question number: 505

» Exponents and Powers

MCQ▾

Question

If Equation , then the value of Equation is________.

Choices

Choice (4) Response

a.

1

b.

3

c.

4

d.

2

Question number: 506

» Direct and Inverse Proportions

MCQ▾

Question

A can do a work in 3 days. If B is 25 % less 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: 507

» Direct and Inverse Proportions

MCQ▾

Question

The ratio of boys and girls in a school of 910 students is Equation . How many girls should be admitted to make ratio Equation ?

Choices

Choice (4) Response

a.

130

b.

260

c.

210

d.

240

Question number: 508

» Exponents and Powers

MCQ▾

Question

If Equation , then Equation is________.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 509

» Exponents and Powers

MCQ▾

Question

The value of Equation when Equation is________.

Choices

Choice (4) Response

a.

4

b.

1

c.

2

d.

5

Question number: 510

» Exponents and Powers

MCQ▾

Question

The standard form of 0.003445 is________.

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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