Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 707 - 713 of 989

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Question 707

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Question

MCQ▾

A cylindrical vessel contains 37.044 liters of liquid. Cost of painting its CSA at 3 paise/sq cm is Rs. 90.72. Then its total surface area is ________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 708

Mathematics
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Question

MCQ▾

If and then the value of is:

Choices

Choice (4)Response

a.

121

b.

-91

c.

61

d.

181

Question 709

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Question

MCQ▾

The diameter of a copper sphere is 24 cm. It is beaten and drawn into a wire of diameter 1.2 cm. The length of wire is ________.

Choices

Choice (4)Response

a.

3200 cm

b.

1600 cm

c.

6400 cm

d.

4600 cm

Question 710

Mathematics
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Question

MCQ▾

The mean of is 16. Then the value of x is

Choices

Choice (4)Response

a.

Data is insufficient

b.

21

c.

Cannot be determined

d.

16

Question 711

Mathematics
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Question

MCQ▾

The daily sale of milk (in liters) in a ration shop for six days is as follows:

42,70,59,60,38.5 and 51.5 The average daily sale is

Choices

Choice (4)Response

a.

53.5

b.

70

c.

51.5

d.

67.5

Question 712

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Question

MCQ▾

The base radius of a cylinder is times its height. The cost of painting its CSA at is Rs. 71.28. The volume of the liquid is ________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question 713

Mathematics
Edit

Question

MCQ▾

The mean of 20 observations is 12.5. By error, one observation was noted as -15 instead of 15. Then the correct mean is

Choices

Choice (4)Response

a.

11.75

b.

11

c.

14

d.

None of the above