Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 74 - 80 of 1201

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Question 74

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Question

MCQ▾

A boat goes downstream and covers the distance between two parts in 6 hrs while it covers the same distance upstream in 7 hrs. If the speed of the stream is 3 kmph, the speed of the boat in still water is:

Choices

Choice (4)Response

a.

20 kmph

b.

26 kmph

c.

18 kmph

d.

32 kmph

Question 75

Mathematics
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Question

MCQ▾

The average of the middle two rational numbers if are arranged in ascending order is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 76

Mathematics
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Question

MCQ▾

If , then ________.

Choices

Choice (4)Response

a.

20

b.

20

c.

20

d.

All of the above

Question 77

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Question

MCQ▾

In a square PQRS, the diagonals bisect at “O”. Then triangle POQ is:

Choices

Choice (4)Response

a.

An isosceles right angled triangle

b.

An isosceles but not a right angled triangle

c.

A right angle but not an isosceles triangle

d.

An equilateral triangle

Question 78

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Question

MCQ▾

The value of x for which open sentence is true.

Choices

Choice (4)Response

a.

3

b.

2

c.

5

d.

1

Question 79

Mathematics
Edit

Question

MCQ▾

If , then ________.

Choices

Choice (4)Response

a.

49

b.

49

c.

49

d.

Question does not provide sufficient data or is vague

Question 80

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Question

MCQ▾

The perimeter of a parallelogram is 60 cm. One side exceeds another by 2 cm. The sides of the parallelogram are:

Choices

Choice (4)Response

a.

54 cm, 56 cm

b.

14 cm, 16 cm

c.

16 cm, 18 cm

d.

22 cm, 24 cm