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

## Question 198

### Write in Short

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 10th diagram is 40.

## Question 199

### Write in Short

What is the special name of the line AB?

### Explanation

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

AB = 16 cm

## Question 200

Edit

### Write in Short

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

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

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