IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 648 - 655 of 930

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Question 648

Question MCQ▾

If then =

Choices

Choice (4)Response

a.

2

b.

1

c.

3

d.

4

Edit

Question 649

Question MCQ▾

If , and , then

Choices

Choice (4)Response

a.

85

b.

120

c.

60

d.

144

Edit

Question 650

Question MCQ▾

The number of ways of writing the number in the form (a, b are integers)

Choices

Choice (4)Response

a.

1

b.

Infinitely many

c.

0

d.

Finitely many

Edit

Question 651

Question MCQ▾

A class starts at 10 a. m. and lasts till 1.27 p. m. four periods are held during this interval. After every period, 5 minutes are given free to the students. The exact duration of each period is ________

Choices

Choice (4)Response

a.

48 minutes

b.

51 minutes

c.

42 minutes

d.

53 minutes

Edit

Question 652

Question MCQ▾

The product of all the solutions of , is ________.

Choices

Choice (4)Response

a.

4

b.

c.

16

d.

Edit

Question 653

Question MCQ▾

The number of positive integers k for which the equation has an integer solution for x is ________

Choices

Choice (4)Response

a.

2

b.

3

c.

5

d.

8

Edit

Question 654

Question MCQ▾

The median of the observation 30, 91, 0, 64, 42, 80, 30, 5,117, 71 is ________

Choices

Choice (4)Response

a.

52.5

b.

51

c.

53

d.

52

Edit

Question 655

Question MCQ▾

In the figure y = 30˚, then ∠ DOE is________ (Assume X = Y)

Find the Value of Angle DOE

Choices

Choice (4)Response

a.

150˚

b.

30˚

c.

60˚

d.

90˚

Edit