# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 430 - 436 of 968

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## Question number: 430

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MCQ▾

### Question

The mean of 50 observations is 44. By error, one observation was noted as was misread as 56. Then the correct mean is ________

### Choices

Choice (4) Response

a.

78.5

b.

32.5

c.

65.5

d.

43.6

## Question number: 431

Edit
MCQ▾

### Question

Area of quadrilateral formed by the vertices is ________

### Choices

Choice (4) Response

a.

310 sq. units

b.

206 sq. units

c.

289 sq. units

d.

196 sq. units

## Question number: 432

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MCQ▾

### Question

Two dices are thrown simultaneously. The probability of getting a sum of 8 is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 433

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MCQ▾

### Question

In a single throws of a die, the probability of getting a number is greater than 2 is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 434

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MCQ▾

### Question

The coordinates of the mid-points of the sides of a triangle are. What will be the coordinates of the centroid of the triangle?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 435

Edit
MCQ▾

### Question

A bag contains Five green, four blue and Three orange marbles. If a marble is picked at random, then the probability that it is not an orange marble, is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 436

Edit
MCQ▾

### Question

Find the area of the quadrilateral, the coordinates of whose angular points taken in order are.

### Choices

Choice (4) Response

a.

20.5

b.

82

c.

41

d.

61.5