# IMO- Mathematics Olympiad Class 10: Questions 424 - 428 of 958

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## Question number: 424

MCQ▾

### Question

A bag contains 6 blue and 4 green marbles. If a marble is drawn at random from the bag, the probability that the marble drawn is green, is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 425

MCQ▾

### Question

In a , coordinates of J are and the equations of the medians through K and L is and respectively, so the coordinates of K and L are ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 426

MCQ▾

### Question

The coordinates of the third vertex of an equilateral triangle whose two vertices are at are ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 427

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: 428

MCQ▾

### Question

The average of 15 results is 50. If the average of the first seven results is 82 and that of the last seven is 92, then the seventh result is ________

### Choices

Choice (4) Response

a.

468

b.

488

c.

466

d.

486

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