# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 162 - 170 of 1484

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## Question 162

### Question

MCQ▾

Which of the following system of equations has no solution?

### Choices

Choice (4)Response

a.

b.

c.

d.

All a., b. and c. are correct

## Question 163

### Question

MCQ▾

Which of the following system of equations has unique solution?

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question 164

### Question

MCQ▾

The coordinates of the points where the line meet the

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 165

### Question

MCQ▾

The sum of digits of a two digit number is 8. If the digits are reversed, the number is decreased by 54. Find the number.

### Choices

Choice (4)Response

a.

30

b.

71

c.

62

d.

80

## Question 166

### Question

MCQ▾

The LCM of two numbers is 160 and HCF is 4. If the sum of the number is 56, their difference is,

### Choices

Choice (4)Response

a.

54

b.

97

c.

27

d.

45

## Question 167

### Question

MCQ▾

Which of the following system of equations has infinitely many solutions?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 168

### Question

MCQ▾

Which of the following system of equations has no solution?

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question 169

### Question

MCQ▾

In , if then is________

### Choices

Choice (4)Response

a.

120°

b.

180°

c.

100°

d.

150°

## Question 170

### Question

MCQ▾

If the ratio of workers to machines in a factory is W and the ratio of machines to workers is M, then W + M is,

### Choices

Choice (4)Response

a.

Less than 1

b.

Greater than 1

c.

Greater than or equal to 1

d.

Equals to 1

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