# IGCSE Mathematics Paper-1: Specimen Questions with Answers 154 - 156 of 175

## Question number: 154

### Describe in Detail

Anita goes to a bank to change into riyals. The bank takes and then changes the remaining amount at a rate of riyals. How much does Anita receive in riyals?### Explanation

Here, Anita goes to a bank to change into riyals.

The bank takes

So, now he has

Now, riyals.

## Question number: 155

### Write in Short

The line with equation passes through the point (4,0). Find k.

### Explanation

Here, equation is and point passing through it is (4,0).

- So, (x, y) = (4,0) put it in the equation:

## Question number: 156

### Write in Short

Look at the sequence of numbers

(a) Write down the next number in the sequence.

(b) Find the 8^{th} number in the sequence.

(c) Write an expression, in terms of n, for the nth number in the sequence.

### Explanation

Here, sequence is

(a) Here, these numbers are even numbers and also this sequence is having the numbers like:

So, here bold numbers are not in sequence, so **after 16** there will be **20.**

(b) Here, further sequence is like:

So, **32** will be the **8**^{th} **number** in the series.

(c) Expression in terms of n of sequence where **.**

- So, first term will get by:
- Second term will get by:
- Third term will get by: and so on.