IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 663 - 670 of 931

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Question 663

Question

MCQ▾

If 100 men can do a job in 80 days, in how many days will 120 men do it in ________.

Choices

Choice (4)Response

a.

67 days

b.

65 days

c.

63 days

d.

69 days

Question 664

Question

MCQ▾

In the figure 3x = 90˚, then ∠ ROS is________

Choices

Choice (4)Response

a.

120˚

b.

150˚

c.

130˚

d.

140˚

Question 665

Question

MCQ▾

The compound interest on ₹ 80000 at per annum for 9 months, compound quarterly is ________

Choices

Choice (4)Response

a.

₹ 14610

b.

₹ 12610

c.

₹ 15610

d.

₹ 13610

Question 666

MCQ▾

If , then =

Choices

Choice (4)Response

a.

2

b.

1

c.

3

d.

0

Question 667

Question

MCQ▾

A man rows downstream 30 km and upstream 18 km, taking 5 hours each time. The velocity of current is ________

Choices

Choice (4)Response

a.

1.2 km/hr

b.

6 km/hr

c.

3.6 km/hr

d.

2.4 km/hr

Question 668

Question

MCQ▾

According to Euclid, a point has________

Choices

Choice (4)Response

a.

b.

No Length but breadth and thickness

c.

Length and breadth but no thickness

d.

No length, no breadth and no thickness

Question 669

Question

MCQ▾

The number of values of k for which the system of equations , has the solutions?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 670

Question

MCQ▾

Which of the following pairs of equations have the same solution

Choices

Choice (4)Response

a.

b.

c.

d.