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Exercise Set A
Question 1
(a) Write down any two even natural numbers.
(b) Is the sum of these two numbers odd or even?
(c) Repeat (a) and (b) four more times with four different pairs of even numbers.
(d) Based on part (c), complete the following sentence:
“The sum of two even natural numbers is always…”
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Question 2
(a) Write down any two odd natural numbers.
(b) Is the sum of these two numbers odd or even?
(c) Repeat (a) and (b) four more times with four different pairs of odd numbers.
(d) Based on part (c), complete the following sentence:
“The sum of two odd natural numbers is always…”
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Question 3
Write a list of \(10\) consecutive natural numbers.
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Question 4
(a) Write a list of \(10\) natural numbers in a random order.
Bonus: None of the numbers should be consecutive.
(b) Put those \(10\) numbers in ascending order.
(c) Put those \(10\) numbers in descending order.
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Question 5
Using each of the digits \(1\), \(2\), \(3\) and \(4\) exactly once, many different four digit numbers can be created, e.g. \(2431\).
(a) State the largest of these four digit numbers.
(b) State the smallest of these four digit numbers.
(c) Write any five of these four digit numbers in ascending order.
Bonus: Try not to use either of the four digit numbers used in parts (a) or (b).
(d) Write any five of these four digit numbers in descending order.
Bonus: Try not to use any of the four digit numbers used in parts (a), (b) or (c).
