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

Question number: 114

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Short Answer Question▾

Write in Short

Mention order of rotational symmetry of given equilateral triangle.

The blank triangle is given.

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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Short Answer Question▾

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(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▾

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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, .