# Mathematics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 365 - 371 of 989

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## Question 365

Mathematics
Edit

### Question

MCQ▾

The probability that in a family of 2 children, there will be at least one girl is

### Choices

Choice (4)Response

a.

b.

c.

d.

1

## Question 366

Edit

### Question

MCQ▾

If and is the solution of the equation , then the value of ‘k’ is ________.

### Choices

Choice (4)Response

a.

18

b.

-6

c.

-19

d.

-21

## Question 367

Mathematics
Edit

### Question

MCQ▾

Two sides of a triangle are 6 and 9 units. Which of the following length can be the length of the third side?

### Choices

Choice (4)Response

a.

15 cm

b.

17 cm

c.

2 cm

d.

11 cm

## Question 368

Mathematics
Edit

### Question

MCQ▾

The area of a parallelogram whose diagonal is 13.6 cm and the perpendicular distance of this diagonal from an opposite vertex is 15 cm is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 369

Edit

### Question

MCQ▾

The cost of painting the TSA of cone at is Rs. 35.2. The volume of the cone its slant height being 50 cm is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 370

Mathematics
Edit

### Question

MCQ▾

The product of two rational numbers is . If one of the number is , then the other number is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 371

Mathematics
Edit

### Question

MCQ▾

If the angles of a triangle are in the ratio 3: 2: 1 then the triangle is

### Choices

Choice (4)Response

a.

Right angled isosceles

b.

Acute angled

c.

Right angled

d.

Obtuse angled