# IGCSE Mathematics Paper-1: Specimen Questions with Answers 114 - 116 of 175

## Question number: 114

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### Write in Short

Mention order of rotational symmetry of given equilateral triangle. The Blank Triangle is Given. Find the order of rotational symmetry of given question figure

### Explanation

Here, The order of rotational symmetry is that an object has the number of times that it fits on to itself during a full rotation of 360 degrees.

• So, here triangle is equilateral means it’s all angles and sides are equal.
• So, it will fit in itself three times during rotation of 360 degrees.
• So, order of symmetry of given triangle is 3.

## Question number: 115

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### Write in Short

(a) If , find the value of y when .

(b) Factorize.

### Explanation

Here,

(a)

Now, put in equation.

So,

.

(b) An integer that divides into another integer exactly is called a Factor.

So, Factorization is a method of writing numbers as the product of their factors or divisors.

So, we can factorize as below:

.

## Question number: 116

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Essay Question▾

### Describe in Detail

Mahi goes to abroad and changes into Rupees. They take and then change the rest of the money at a rate of . How much does Mahi receive in Rs. ?

### Explanation

Here, Mahi goes to abroad and changes into Rupees.

They take.

So, now she has.

Now, .