Question

II. Multiple choice questions with one or more than one correct answer:

25. If 'a'and 'b' are two integers then

1) a+b is an integer
2) a-b is an integer
3)a-bis not an integer
4) a÷b is an integer

choose two options

26. For any three integers a, b, c

1)(a + b)+c=a + (b+c)
2) (a×b) xc= a (b × c)
3) (a-b)-c=a (b-c)
4) (a ÷ b) ÷ c€a÷(b÷c)​

Answer 1

Answer:

25 answer 1, 2 and 4

26 answer 1 and 2

Step-by-step explanation:

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Answer 2

25 - 1 and 2

26-1and 2

for 25 let a =1 and b=2

then

1 - 1+2=3 which is a integer

2-1-2=-1 which is a integer

but other r not

for 26 let a =1 and b=2 c=3

then

1- (1+2)+3=3+3=. 6

also 1+(2+3)=6

2- (1×2)×3=2×3=. 6

also 1×(2×3)=6

but other r not