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37 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Represent the following numbers on the number line:
2, 0, 3, 5, 7, 11, 15
Answer

Numbers are as shown in the above line.
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Question 31 Mark
Which of the following statements are true and which are false?
1 is the smallest whole number.
Answer
False.
Solution:
Zero (0) is the smallest whole number.
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Question 71 Mark
Which of the following statements are true and which are false?
The smallest s-digit number is the successor of the largest 4 digit number.
Answer
True.Solution:
The smallest five-digit number = 10,000 The largest four-digit number = 9,999 Difference = 10,000 - 9,999 = 1 Because the difference is 1, 10,000 is the successor of 9,999
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Question 91 Mark
Write down three consecutive whole numbers just preceding 8510001.
Answer
We have:
First number = 8,510,001 - 1 = 8,510,000
Second number = 8,510,000 - 1 = 8,509,999
Third number = 8,509,999 - 1 = 8,509,998
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Question 101 Mark
Which of the following statements are true and which are false?
lf a and bare whole numbers and a < b, then a + 1 < b + 1.
Answer
True.
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Question 121 Mark
Write the largest number of 6 digits and the smallest number of 7 digits. Which one of these two is larger and by how much?
Answer
999999, 1000000, 1000000 is 1 airier by 1
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Question 131 Mark
Which of the following statements are true and which are false?
Every whole number has its successor.
Answer
True.
Solution:
The successor of every whole number can be found by adding 1.
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Question 141 Mark
Write down, if possible, the largest whole number.
Answer
We know that every whole number has a successor. Thus, there is no largest whole number.
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Question 151 Mark
Which of the following statements are true and which are false?
Of the given hvo natural numbers, the one having more digits is greater.
Answer
True.
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Question 171 Mark
Which of the following statements are true and which are false?
Every whole number has its predecessor.
Answer
False.
Solution:
Zero (0) is a whole number whose predecessor (-1) is not a whole number.
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Question 191 Mark
Which of the following statements are true and which are false?
Between any two non-consecutive whole numbers there is a whole number.
Answer
True.
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Question 201 Mark
Write down the predecessor of the following whole numbers:
7005000
Answer
Predecessor of 7005000 is 7004999.
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Question 211 Mark
Which of the following statements are true and which are false?
The natural number 'l has no predecessor.
Answer
True.Solution:
The predecessor of natural number 1 is 0, which is not a natural number.
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Question 221 Mark
Write down, if possible, the largest natural number.
Answer
We know that every natural number has a successor. Thus, there is no largest natural number.
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Question 241 Mark
Which of the following statements are true and which are false?
Between any two whole numbers there is a whole number.
Answer
False.
Solution:
There is no whole number between two consecutive whole numbers.
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Question 251 Mark
Which of the following statements are true and which are false?
The whole number t has 0 as predecessor.
Answer
True.
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Question 281 Mark
Which of the following statements are true and which are false?
The predecessor of a two digit number cannot be a single digit number.
Answer
False.Solution:
10 is a two-digit number whose predecessor is 9, which is a one-digit number.
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Question 301 Mark
Which of the following statements are true and which are false?
0 is the smallest natural number.
Answer
False.
Solution:
1 is the smallest natural number.
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Question 321 Mark
Which of the following statements are true and which are false?
0 is less than every natural number.
Answer
True.
Solution:
The smallest natural number is 1, so zero (0) is less than every natural number.
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Question 331 Mark
Which of the following statements are true and which are false?
lf a and b are natural numbers and a < b, than there is a natural number c such that a
Answer
False.Solution:
If a and b are consecutive natural numbers, then there cannot be any natural number c in between aand b.
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Question 351 Mark
Arrange the following numbers is descending order:
925, 786, 1100, 141, 325, 886, 0, 270
Answer
1100, 925, 886, 786, 325, 270, 141, 0.
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Question 371 Mark
Give arguments in support of the statement that there does not exist the largest natural number.
Answer
We know that every natural number has a successor. Therefore, the largest natural number does not exist.
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