# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 872 - 877 of 989

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## Question number: 872

Edit

### Question

MCQ▾

A cylindrical vessel of diameter 9 cm is partly filled with water. 200 lead balls are dropped in it. The raise in water level is 0.6 cm. The diameter of each ball is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 873

Mathematics
Edit

### Question

MCQ▾

The probability of getting a number greater than 3 or an odd number in a single throw of a fair die is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 874

Mathematics
Edit

### Question

MCQ▾

The top of a broken tree touches the ground at a distance of 40 m from its base. If the tree is broken at a height of 9 m from the ground, then the actual height of the tree is

### Choices

Choice (4)Response

a.

90 m

b.

81 m

c.

49 m

d.

50 m

## Question number: 875

Mathematics
Edit

### Question

MCQ▾

What is the percentage of least number in the greatest number if are arranged in ascending or descending order?

### Choices

Choice (4)Response

a.

40%

b.

c.

35%

d.

## Question number: 876

Edit

### Question

MCQ▾

A cone of radius 25 cm is divided into two parts by drawing a plane through the midpoints of its axis, parallel to its base. The ratio of volumes of the two parts formed is ________.

### Choices

Choice (4)Response

a.

5: 1

b.

12: 1

c.

1: 7

d.

1: 14

## Question number: 877

Mathematics
Edit

### Question

MCQ▾

The sum of 20 numbers is 580. The mean of those numbers is

### Choices

Choice (4)Response

a.

21

b.

19

c.

29

d.

58