IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 567 - 575 of 931

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Question 567

Question

MCQ▾

Which color is opposite to yellow?

Choices

Choice (4)Response

a.

Purple

b.

Violet

c.

Blue

d.

Red

Question 568

Question

MCQ▾

In the number 5904627813 first and sixth digits are interchanged; and similarly the positions of second and seventh digits and so on are interchanged. Which of the following will be the 4th digit from the right after the new arrangement?

Choices

Choice (4)Response

a.

1

b.

0

c.

4

d.

9

Question 569

Question

MCQ▾

If then the value of is ________.

Choices

Choice (4)Response

a.

b.

1

c.

d.

-1

Question 570

Question

MCQ▾

If , then the value of x is________.

Choices

Choice (4)Response

a.

2

b.

6

c.

4

d.

8

Question 571

Question

MCQ▾

and then x = ________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 572

Question

MCQ▾

The difference between a discount of on ₹ 1000 and two successive discounts of on the same amount is ________

Choices

Choice (4)Response

a.

₹ 22

b.

₹ 17.20

c.

₹ 18.40

d.

₹ 14.56

Question 573

MCQ▾

Choices

Choice (4)Response

a.

b.

c.

d.

Question 574

Question

MCQ▾

Find the remainder when is divided by .

Choices

Choice (4)Response

a.

3

b.

-3

c.

2

d.

-2

Question 575

Question

MCQ▾

If the mean of 20 observations is 25 and that of another 5 observations is 14, then the mean of 25 observations is ________

Choices

Choice (4)Response

a.

15

b.

22

c.

22.8

d.

15.5