# Mathematics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 78 - 82 of 224

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## Question number: 78

MCQ▾

### Question

The roots of the equation are 1 and 2. The roots of the equation must be

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 79

» Mathematics » Basic Geometry

MCQ▾

### Question

ABCD is a square of side a, ABO is an equilateral triangle and OL is perpendicular to CD. Then area of the trapezium AOLD is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 80

» Mathematics » Rational Numbers

MCQ▾

### Question

20 L of a mixture contains milk and water in the ratio 5: 3. If 4 L of this mixture are replaced by 4 L of milk, the ratio of milk to water in the new mixture will become

### Choices

Choice (4) Response

a.

9: 7

b.

8: 3

c.

4: 6

d.

7 : 3

## Question number: 81

» Mathematics » Statistics

MCQ▾

### Question

The mean of a set of number is x. If each number is divided by 3, then the new mean is

### Choices

Choice (4) Response

a.

b.

x

c.

3x

d.

x + 3

## Question number: 82

» Mathematics » Basic Geometry

MCQ▾

### Question

In figure , if and , then find the value of x.

### Choices

Choice (4) Response

a.

36°

b.

96°

c.

48°

d.

Question does not provide sufficient data or is vague

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