# Numerical Ability [GATE (Graduate Aptitude Test in Engineering) Aptitude]: Questions 30 - 34 of 103

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## Question 30

Numerical Ability

### Question

MCQ▾

Which of the following assertions are CORRECT?

P: Adding to each entry in a list adds to the mean of the list

Q: Adding to each entry in a list adds to the standard deviation of the list

R: Doubling each entry in a list doubles the mean of the list

S: Doubling each entry in a list leaves the standard deviation of the list unchanged

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 31

Numerical Ability

Appeared in Year: 2015

### Question

MCQ▾

In the given figure angle is a right angle, , and . If area of triangle is , then the area of triangle in is ________.

### Choices

Choice (4)Response

a.

180

b.

250

c.

220

d.

280

## Question 32

Numerical Ability

Appeared in Year: 2013

### Question

MCQ▾

If then the values of is:

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 33

Numerical Ability

Appeared in Year: 2020

### Question

MCQ▾

A four-digit integer number from 1001 - 9999, the digit group ‘37’ (in the same sequence) appears ________ times.

### Choices

Choice (4)Response

a.

280

b.

299

c.

279

d.

270

## Question 34

Numerical Ability

Appeared in Year: 2013

### Question

MCQ▾

A firm is selling its product at per unit. The total cost of production is and firm is earning total profit of . Later, the total cost increased by . By what percentage the price should be increased to maintain the same profit level?

### Choices

Choice (4)Response

a.

5

b.

10

c.

15

d.

30

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