# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 278 - 285 of 1042

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## Question 278

Edit

### Question

MCQ▾

The number of sides of a regular polygon whose each exterior angle has a measure of is________.

### Choices

Choice (4)Response
a.10
b.8
c.6
d.3

## Question 279

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### Question

MCQ▾

Sugar is bought at Rs. 15.00 per kg and sold at Rs. 14.00 per kg. The loss percent is________.

### Choices

Choice (4)Response
a.3.00%
b.3.12%
c.6.66%
d.6.00%

## Question 280

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### Question

MCQ▾

Four angles of a quadrilateral are in the ratio 4: 8: 16: 32. The greatest angle is________.

### Choices

Choice (4)Response
a.144
b.120
c.150
d.192

## Question 281

Edit

### Question

MCQ▾

The exterior angle of a regular polygon is one-half of its interior angle. How many sides has the polygon?

### Choices

Choice (4)Response
a.5
b.6
c.8
d.4

## Question 282

Edit

### Question

MCQ▾

Sum of the exterior angle of quadrilateral is________.

### Choices

Choice (4)Response
a.360
b.120
c.450
d.180

## Question 283

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### Question

MCQ▾

The simple interest at y % for y years will be Rs. y on a sum of________.

### Choices

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

## Question 284

Edit

### Question

MCQ▾

The simple interest at a % for a years will be Rs. 2a on a sum of________.

### Choices

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

## Question 285

Edit

### Question

MCQ▾

The exterior angle of a regular polygon is one-fifth of its interior angle. How many sides has the polygon?

### Choices

Choice (4)Response
a.4
b.10
c.8
d.12