# IMO- Mathematics Olympiad Class 9: Questions 522 - 527 of 919

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## Question number: 522

MCQ▾

Factorize

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 523

MCQ▾

### Question

The mean of 30 items is x and if each item is increased by 5, then its mean will be ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 524

MCQ▾

### Question

Find the number of triangles in the given figure.

### Choices

Choice (4) Response

a.

18

b.

24

c.

20

d.

Question does not provide sufficient data or is vague

## Question number: 525

MCQ▾

### Question

If , and then value of t when , is________.

### Choices

Choice (4) Response

a.

-1

b.

-2

c.

2

d.

1

## Question number: 526

MCQ▾

### Question

In a certain code DISNEYWORLD code is written as EISNDYDORLW. How will CHIDAMBARAM be written in the code

### Choices

Choice (4) Response

a.

ERDFCVSDWEA

b.

KDMCFHRYTGS

c.

AHIDCMMARAB

d.

## Question number: 527

MCQ▾

### Question

The parking charges of a car on Pune railway station for first 3 hours in Rs. 70 and 20 Rs. for subsequent hours, write down an equation for this information is________

### Choices

Choice (4) Response

a.

b.

c.

d.

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