# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 147 - 155 of 1484

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## Question number: 147

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MCQ▾

### Question

A toy train crosses 210 m and 122m long tunnels in 25 and 17 seconds respectively. The length of the train is.

### Choices

Choice (4)Response

a.

332m

b.

88m

c.

65m

d.

11m

## Question number: 148

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MCQ▾

### Question

The LCM of two numbers is 630 and HCF is 9. If the sum of the number is 153, their difference is,

### Choices

Choice (4)Response

a.

27

b.

56

c.

45

d.

97

## Question number: 149

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MCQ▾

### Question

The primes p, q and r satisfy where “r” is an even number, then p equals:

### Choices

Choice (4)Response

a.

2

b.

6

c.

8

d.

4

## Question number: 150

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MCQ▾

### Question

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

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 151

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MCQ▾

### Question

Which of the following system of equations is consistent?

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question number: 152

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MCQ▾

### Question

For what values of a and b will the equations represent coincident lines?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 153

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MCQ▾

### Question

When are multiplied, the product is a polynomial of degree, ________

### Choices

Choice (4)Response

a.

2

b.

6

c.

8

d.

4

## Question number: 154

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MCQ▾

### Question

The solution of is:

### Choices

Choice (4)Response

a.

5

b.

3

c.

d.

1

## Question number: 155

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MCQ▾

### Question

Of the following alternatives, the one that includes all values of x which satisfy

Is:

### Choices

Choice (4)Response

a.

b.

c.

d.

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