# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 466 - 471 of 989

Access detailed explanations (illustrated with images and videos) to 2000 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access & Unlimited Time!

View Sample Explanation or View Features.

Rs. 550.00 -OR-

## Question number: 466

Mathematics
Edit

### Question

MCQ▾

Which of the following alternatives is wrong? Given that

(I) Difference of two rational numbers is a rational number

(II) Subtraction is commutative on rational numbers

(III) Addition is not commutative on rational numbers

### Choices

Choice (4)Response

a.

(I) and (III)

b.

(I) only

c.

(II) and (III)

d.

Question does not provide sufficient data or is vague

## Question number: 467

Mathematics
Edit

### Question

MCQ▾

In a if , , then perimeter of the triangle is

### Choices

Choice (4)Response

a.

73 cm

b.

54 cm

c.

61 cm

d.

None of the above

## Question number: 468

Mathematics
Edit

### Question

MCQ▾

If a coin is tossed twice, the probability of getting at least one tail is

### Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

## Question number: 469

Mathematics
Edit

### Question

MCQ▾

If is divided by 17 then the remainder is

### Choices

Choice (4)Response

a.

-2

b.

-1

c.

0

d.

1

## Question number: 470

Mathematics
Edit

### Question

MCQ▾

The area of a triangle whose sides are 12,13 and 15 cm.

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 471

Edit

### Question

MCQ▾

A cylindrical vessel of diameter 12 cm is partly filled with water. 120 lead balls are dropped in it. The raise in water level is 0.8 cm. The diameter of each ball is ________.

### Choices

Choice (4)Response

a.

b.

c.

d.