*S74828A0124*
, Answer ALL questions.
Write your answers in the spaces provided.
You must write down all the stages in your working.
1 Find the lowest common multiple (LCM) of 20 and 35
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. . . . .. . . . ..
(Total for Question 1 is 2 marks)
2 There are only black discs, white discs and yellow discs in a box.
The table shows the probability of picking at random a black disc.
Colour black white yellow
Probability 0.55
. ... ....... ... .......... ... .. ... .. .. . . .. . . . .. . . . .. . .. .
The probability of picking a white disc is twice the probability of picking a yellow disc.
Complete the table.
(Total for Question 2 is 3 marks)
*S74828A0224*
, 3 Here are the first five terms of an arithmetic sequence.
5 13 21 29 37
Write down an expression, in terms of n, for the nth term of the sequence.
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. .. . .. . . . ..
(Total for Question 3 is 2 marks)
4 One sheet of A4 paper has an area of m2
A4 paper has a mass of 80 g per m2
Work out the total mass of 320 sheets of A4 paper.
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. .. . .. . . . ..
(Total for Question 4 is 4 marks)
*S74828A0324*
, Answer ALL questions.
Write your answers in the spaces provided.
You must write down all the stages in your working.
1 Find the lowest common multiple (LCM) of 20 and 35
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. . . . .. . . . ..
(Total for Question 1 is 2 marks)
2 There are only black discs, white discs and yellow discs in a box.
The table shows the probability of picking at random a black disc.
Colour black white yellow
Probability 0.55
. ... ....... ... .......... ... .. ... .. .. . . .. . . . .. . . . .. . .. .
The probability of picking a white disc is twice the probability of picking a yellow disc.
Complete the table.
(Total for Question 2 is 3 marks)
*S74828A0224*
, 3 Here are the first five terms of an arithmetic sequence.
5 13 21 29 37
Write down an expression, in terms of n, for the nth term of the sequence.
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. .. . .. . . . ..
(Total for Question 3 is 2 marks)
4 One sheet of A4 paper has an area of m2
A4 paper has a mass of 80 g per m2
Work out the total mass of 320 sheets of A4 paper.
. . .. . . .. . . . .. . . . .. . . .. . . .. . . . .. . . .. . . . .. . . .. .. . .. . . . ..
(Total for Question 4 is 4 marks)
*S74828A0324*
