NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 249 - 255 of 1484

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Question number: 249

» Mathematics » Arithmetic Progressions

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MCQ▾

Question

If ‘a’ is the AM of 3 numbers and ‘b’ is the AM of their squares, then the AM of their pair wise products in terms of a and b is

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 250

» Mathematics » Arithmetic Progressions

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MCQ▾

Question

The sum of the first 50 positive integers exactly divisible by 7 is

Choices

Choice (4) Response

a.

7140

b.

8925

c.

8980

d.

7535

Question number: 251

» Mathematics » Arithmetic Progressions

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MCQ▾

Question

If a, b and c are in G. P. with and is an integer, then form a sequence ________.

Choices

Choice (4) Response

a.

In which the reciprocals of the terms form an A. P.

b.

Which is a G. P.

c.

Which is an A. P.

d.

All of the above

Question number: 252

» Mathematics » Coordinate Geometry

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MCQ▾

Question

The coordinates of the points of tri-section of a segment joining and is ________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 253

» Mathematics » Quadratic Equations

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MCQ▾

Question

The difference of the roots of is

Choices

Choice (4) Response

a.

b.

c.

-8

d.

Question does not provide sufficient data or is vague

Question number: 254

» Mathematics » Arithmetic Progressions

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MCQ▾

Question

The AM between and is

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 255

» Mathematics » Arithmetic Progressions

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MCQ▾

Question

The numbers of number which have 2,3, 6,5 as factors between 1 and 1000 is

Choices

Choice (4) Response

a.

33

b.

30

c.

38

d.

28

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