# IGCSE Mathematics Paper-1: Specimen Questions with Answers 198 - 201 of 324

## Question 198

### Write in Short

Short Answer▾Look at the sequence of diagrams above.

The number of dots in each diagram is given in the table below.

Find the number of dots in

Diagram 10,

### Explanation

For this sequence the difference between each diagram and next diagram is 3.

Here

Here apply this equaion

The number of dots in 10^{th} diagram is 40.

## Question 199

### Write in Short

Short Answer▾What is the special name of the line AB?

### Explanation

- A horizontal line is one which runs from left to right or right to left across the page.
- It comes from the word ‘horizon’ .

AB = 16 cm

## Question 200

### Write in Short

Short Answer▾Saniya has a monthly salary of $ 1500. She spends $ 300 per month on food. What percent of her monthly salary does she spend on food?

### Explanation

The part of her salary that is spent on food is $ 300 out of her monthly salary of $ 1500

Multiply and divide 0.2 by 100 to convert in percent

## Question 201

### Write in Short

Short Answer▾In the diagram AB is parallel to CD.

Calculate the value of a.

### Explanation

Here given the value of two interior angles of same side

So, the sum of interior angles of same side of transversal