# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 140 - 146 of 1484

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## Question number: 140

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MCQ▾

### Question

For what value of k, the system of equations has infinitely many solutions.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 141

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MCQ▾

### Question

The income of P and Q are in the ratio 3: 2 and expenses are in the ratio 5: 3. If both save Rs. 200, what is the income of P?

### Choices

Choice (4)Response

a.

1200

b.

700

c.

1400

d.

1000

## Question number: 142

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MCQ▾

### Question

The sum of salaries of A and B are Rs. 6800. A spends 60 % of his salary and B spends 50%. If their savings are now in the proportion of 1: 2, what is the salary of B?

### Choices

Choice (4)Response

a.

4560

b.

3456

c.

1250

d.

2550

## Question number: 143

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MCQ▾

### Question

For what value of k, the system of equations has infinitely many solutions.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 144

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MCQ▾

### Question

The equation has:

### Choices

Choice (4)Response

a.

Two imaginary root

b.

One real root

c.

No root

d.

One real root and one imaginary root

## Question number: 145

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MCQ▾

### Question

If x, y and are not zero, then equals to,

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 146

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MCQ▾

### Question

The age of a woman is three times the age of her daughter. Five years hence, the age of woman will be two times the age of her daughter. The present age of daughter is,

### Choices

Choice (4)Response

a.

4

b.

6

c.

3

d.

5

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