IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 521 - 530 of 1042

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Question 521

Question

MCQ▾

For a group of 15 students food lasts for 50 days. For how many days will the same food last for 75 students?

Choices

Choice (4)Response

a.

25 days

b.

10 days

c.

15 days

d.

20 days

Question 522

Question

MCQ▾

The value of is________.

Choices

Choice (4)Response

a.

4

b.

1

c.

2

d.

5

Question 523

Question

MCQ▾

If , then is________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 524

Question

MCQ▾

The standard form of 12650000 is________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 525

Question

MCQ▾

If and , then the value of is ________.

Choices

Choice (4)Response

a.

6

b.

8

c.

9

d.

10

Question 526

Question

MCQ▾

The weight of a 12 m long iron rod is 20.5 kg. The weight of 5 m long of such rod will be________.

Choices

Choice (4)Response

a.

8.54 kg

b.

8 kg

c.

9.5 kg

d.

9 kg

Question 527

Question

MCQ▾

The weight of a 15 m long iron rod is 25 kg. The weight of 10 m long of such rod will be________.

Choices

Choice (4)Response

a.

18.54 kg

b.

18 kg

c.

16.6 kg

d.

16 kg

Question 528

Question

MCQ▾

A can do a work in 8 days. If B is 60 % more efficient than A, then in how many days can B do the same work?

Choices

Choice (4)Response

a.

3.5

b.

4

c.

5

d.

3

Question 529

Question

MCQ▾

The value of is________.

Choices

Choice (4)Response

a.

b.

c.

d.

49

Question 530

Question

MCQ▾

If and , then is equal to________.

Choices

Choice (4)Response

a.

b.

c.

d.