# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 1013 - 1020 of 1022

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## Question 1013

### Question

MCQ▾

The mean of 7 numbers is 40. If one number is included, mean of the numbers becomes 50, and then the included number is________.

### Choices

Choice (4)Response

a.

120

b.

140

c.

150

d.

130

## Question 1014

### Question

MCQ▾

Which letter of the English alphabet has reflection symmetry about vertical mirrors?

### Choices

Choice (4)Response

a.

H

b.

N

c.

Z

d.

B

## Question 1015

### Question

MCQ▾

The average of the two middle rational numbers if are arranged in descending order is ________

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 1016

MCQ▾

If , then x =

### Choices

Choice (4)Response

a.

0

b.

2

c.

3

d.

1

## Question 1017

### Question

MCQ▾

What fraction of the figure is shaded?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 1018

### Question

MCQ▾

If the area of a trangle with base 2x is equal to the area of a square with side 2x, then the altitude of the triangle is ________.

### Choices

Choice (4)Response

a.

4x

b.

c.

3x

d.

2x

## Question 1019

### Question

MCQ▾

Salary of a professor increases every year by 10 % . His salary in the year 2011 was ₹ 88000. Find his original slary.

### Choices

Choice (4)Response

a.

₹ 80,000

b.

₹ 90,008

c.

₹ 88,000

d.

₹ 79,508

## Question 1020

### Question

MCQ▾

Shreya answered of the questions on her quiz correctly. What percent of the questions did she answer correctly?

### Choices

Choice (4)Response

a.

75 %

b.

25 %

c.

40 %

d.

50 %