2. Number M
4/……………………..
Kanchanapisekwittayalai Phetchabun School
The Secondary Educational Service Area
Office 40
Exercises Number 1
1. Consider the following sentence which is statement or not
and give the reason.
No. Sentence Statement
Not be
Statement
The reason
11 it
3. prime
number
1 August is
the 30
days of
month
2 7 { 1 ,
3, 5 , 7 , 9
}
3 ( 8 + 22 )2
can’t
divided by
102
4 Please
keep
clean.
5 Answer
the
following
question.
6 > 3
7 9 is prime
number
8 { 1 ,
4. 2 }
9 You can
call as you
want.
10 x is one
factor of
x2 - x
11 { }
= { 1 , 2 ,
3 }
12 { 0 }
{ , 0 }
13 Don’t
touch me !
14 Why do
you come
to school
late?
15 is
integer
number.
16 2 or -3
is the
answer of
5. x2 - x =
6
17 Have a
safety
travel.
18 Welcom.
19 The
factors of
12 has 6
numbers.
20 The
predict
that the
foods are
abound in
this year.
2. Write 5 statements and Give the truth – value of
statements.
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7. Exercises Number 2
1. Write the following statements be symbol and Find the
truth – value of statements.
1.1 0 is the natural number and 6 is the integer
number.
Symbol
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The truth – value of Statement
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1.2 9 is not equal 10 or 10 is less than 9
Symbol
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The truth – value of Statement
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1.3 and -1 are real Number.
Symbol
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The truth – value of Statement
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1.4 if 1 { 1 , 2 } then 1 { 1 , 2 }
Symbol
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The truth – value of Statement
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1.5 is rational number and is not real number.
Symbol
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The truth – value of Statement
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1.6 2 is great common divisor of 4 and 6 if and only if
2 can’t divide 4 + 6
Symbol
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The truth – value of Statement
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1.7 if 3 is odd number then 32 is odd number.
Symbol
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14. …………………………………………………………………
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The truth – value of Statement
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1.8 is real number or is rational number.
Symbol
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The truth – value of Statement
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1.9 13 is prime number if and only if 13 has factor
is 1 and 13
Symbol
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16. …………………………………………………………………
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The truth – value of Statement
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1.10 if { 3 } { 3 , 4 } then 3 { 3 , 4 }
Symbol
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23. Negation of
statement
The truth – value of negation of
statement
2.2 -7 > 6
Negation of
statement
The truth – value of negation of
statement
2.3 Set of natural number is the answer of x2 + 1 = 0
be empty set .
Negation of
statement
24. The truth – value of negation of
statement
2.4 { 3 , 4 } { 1 , 3 , 4 , 5 }
Negation of
statement
The truth – value of negation of
statement
2.5 {{2}} {2}
Negation of
statement
The truth – value of negation of
statement
25. 2.6 -3 + 6 -3 + 6
Negation of
statement
The truth – value of negation of
statement
2.7 15 is not real number.
Negation of
statement
The truth – value of negation of
statement
2.8 Whale is mammal.
26. Negation of
statement
The truth – value of negation of
statement
2.9 2 is the prime number.
Negation of
statement
The truth – value of negation of
statement
2.10 5 is the factor of 25
Negation of
statement
27. The truth – value of negation of
statement
3. Write this contents instead the following symbols.
Give p
q
3.1 p
3.2 p q
3.3 p q
29. Exercises Number 3
1. Give p , q , r , s and t be statement and have truth –
value are true , false , true , false and false following order.
Find the truth – value following the statements.
1.1 ( p q ) r
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1.2 ( p r ) (t s )
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1.7 ( r q ) (s t )
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1.8 ( p q) ( r s )
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1.9 ( s p ) ( q r )
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1.10 ( q r ) ( p s )
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34. 1.11 [( p q) ( t r )] s
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1.12 [( p q ) ( t s )] [(q r) s]
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1.13 Find the truth – value of statement by give p,q,r
have truth – value are T,F,F
35. [ p (p q)] [q r) (p r)]
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1.14 Find the truth – value of statement by give p,q,r
have truth – value are T,F,F
(p q) r
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2. Give p , q , r and s be statement.
2.1 Give p q has truth – value is false. Find the
truth – value of the following statemet.
( p q ) ( p q )
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2.3 Give [ p ( q r )] ( s r) has the truth -
value is false. Find the truth - value of p ,
q , r s
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2.4 Give (r t) [ (s t)] has truth – value is T Find
the truth – value of r,s,t
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41. 1.3 p ( p q )
p q
1.4 q [ p ( q p )
p q
1.5 ( q p ) r
42. p q r
1.6 ( q r ) ( r p )
p q r
1.7 [( p q ) ( p s )] ( r s )
p q r s
43.
44. Exercises number 5
1. Consider the following statement patterns Which one is
equivalent .
1.1 ( p q ) r
( p r ) ( q r ) ( p r ) ( q r )
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62. …………………………………………………………………
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2.2 is rational number if and only if is real
number.
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73. 5 p q ( p q ) ( q p )
6 is rational
number
is irrational
number
7 If 2 + 1 = 3 then 3
is natural number .
3 is not natural
number but
2 + 1 = 3
8 A is even number
and integer number.
A is odd number or
is not integer number.
Exercises number 6
74. Consider statement pattern be tautology or not .
1. [ (p q)] [( p q)]
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