# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 321 - 327 of 931

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## Question 321

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### Question

MCQ▾

If in the following image angle PQR is 110˚ then what would be the angle PSR?

### Choices

Choice (4)Response
a.120˚
b.170˚
c.140˚
d.150˚

## Question 322

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### Question

MCQ▾

If the purple angle is 40˚ and the yellow one is 30˚ what is the measure of aqua angle?

### Choices

Choice (4)Response
a.110˚
b.120˚
c.130˚
d.140˚

## Question 323

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### Question

MCQ▾

What change in percent is made in the area of a rectangle by increasing its length byand breadth by?

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 324

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### Question

MCQ▾

In the figure, AD is the bisector of of, then ________

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 325

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### Question

MCQ▾

The distance between the points P (5,3) and Q (5,6) is calculated as

### Choices

Choice (4)Response
a.4
b.3
c.-3
d.-4

## Question 326

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### Question

MCQ▾

If two medians of a triangle are equal, then the triangle is ________

### Choices

Choice (4)Response
a.Equilateral triangle
b.Right angle triangle
c.Scalene triangle
d.Isosceles triangle

## Question 327

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### Question

MCQ▾

The base of a prism is a right angle triangle and the two sides containing the right angle are 8 cm and 15 cm. if its height is 20 cm, then the volume of the prism is ________

### Choices

Choice (4)Response
a.160 c. cm.
b.600 c. cm.
c.300 c. cm.
d.1200 c. cm.