IGCSE Mathematics Paper-1: Specimen Questions with Answers 154 - 156 of 324

Question 154

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Essay▾
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 155

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Short Answer▾

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 156

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Short Answer▾

Look at the sequence of numbers

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

(b) Find the 8th 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 1620. there will be

(b) Here, further sequence is like:

So, 32 8will be the 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.

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