# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 227 - 233 of 1484

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## Question number: 227

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MCQ▾

### Question

The sum of 15 terms of is

### Choices

Choice (4) Response

a.

log120

b.

240. log5

c.

120. log5

d.

log15

## Question number: 228

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MCQ▾

If then =

### Choices

Choice (4) Response

a.

4

b.

- 4

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

## Question number: 229

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MCQ▾

### Question

The measures of the interior angles of a convex polygon are in AP. If the smallest angle is and the largest angle is , then the number of sides of the polygon is

### Choices

Choice (4) Response

a.

7

b.

11

c.

5

d.

9

## Question number: 230

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MCQ▾

### Question

and are three vertices of the parallelogram ABCD. The coordinates of the fourth vertex is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 231

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MCQ▾

### Question

The 8th term of an AP is 16 and the 15th term is 58. Then the second term is

### Choices

Choice (4) Response

a.

-26

b.

42

c.

18

d.

-20

## Question number: 232

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MCQ▾

### Question

If the sum of the first p terms of an AP is the same as the sum of its first q terms (where ), then the sum of its first terms is

### Choices

Choice (4) Response

a.

1

b.

0

c.

d.

pq

## Question number: 233

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MCQ▾

The roots of are

### Choices

Choice (4) Response

a.

1,2 and 3

b.

3

c.

0 and 3

d.

0, -1, -2 and 3

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