# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 811 - 818 of 989

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## Question number: 811

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### Question

MCQ▾

The dimensions of a hall are 20 m, 12.5 m, 10 m. If each person requires 100 cubic meter, then the number of persons who can be accommodated in the hall are

### Choices

Choice (4)Response

a.

120

b.

100

c.

25

d.

50

## Question number: 812

Mathematics
Edit

MCQ▾

If then is

### Choices

Choice (4)Response

a.

b.

8

c.

16

d.

12

## Question number: 813

Mathematics
Edit

### Question

MCQ▾

If then a = ________.

### Choices

Choice (4)Response

a.

-2

b.

2

c.

40

d.

All of the above

## Question number: 814

Mathematics
Edit

### Question

MCQ▾

The irrational number between 5 and 6 is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 815

Mathematics
Edit

### Question

MCQ▾

The perimeter of a rhombus is 32 cm and one of its diagonals is 12 cm. The length of the other diagonal is

### Choices

Choice (4)Response

a.

42.66 cm

b.

20 cm

c.

44 cm

d.

21.33 cm

## Question number: 816

Mathematics
Edit

### Question

MCQ▾

The sides of a triangle are 14 cm, 48 cm and 50 cm. The altitude to middle length side is

### Choices

Choice (4)Response

a.

28 cm

b.

25 cm

c.

24 cm

d.

14 cm

## Question number: 817

Edit

### Question

MCQ▾

The largest volume of a cube that can be enclosed in a sphere of diameter 4 cm is (in )

### Choices

Choice (4)Response

a.

b.

2

c.

d.

π

## Question number: 818

Mathematics
Edit

### Question

MCQ▾

If 9,11,5 and 3 occur with frequencies 2,5, 1 and 6 respectively, then the arithmetic mean is

### Choices

Choice (4)Response

a.

6.6

b.

2.3

c.

6.86

d.

10