# IGCSE Mathematics Paper-1: Specimen Questions with Answers 155 - 157 of 175

## 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.

## Question number: 157

### Write in Short

Roomy borrows from a loan company for his new business. The loan company charges simple interest of per year. How much interest will Roomy pay after 4 years?

### Explanation

Here, Roomy borrows loan of for simple interest per year.

So, here, Price P = Rate (R) = 5 % per annum and Time (T) = 4 years.

So, by using the formula of simple interest **. **