 # Operations on Integers

## There is no content available!

To Access the full content, Please Purchase

• Q1

The product of a positive integer and a negative integer is

Marks:1

negative.

##### Explanation:

The product of a positive integer and a negative integer is always negative because 1 x -1 = -1.

• Q2

If x 48 = -1, then the value of x is

Marks:1

-48.

##### Explanation:

x 48 = -1 = -1,

x = -1 48 = -48

• Q3

(-105) (7) = ………

Marks:1

-15.

##### Explanation:

In general, for any two positive integers a and b, we have
a (-b) = - (a) (b)

Here, a = -105 and b = 7.
On solving,

(-105) (7) = -15

• Q4

The value of (-1) (-5) (-4) (-7) is

Marks:1

140.

##### Explanation:

(-1) (-5) (-4) (-7) = [(-1) (-5)] [ (-4) (-7)]
In general, for any integer a and b.
(-a) (-b) = a b

Therefore, the given expression can be evaluated as follows:
[(-1) (-5)] [(-4) (-7)] = (1 5) (4 7)

= 5 28

= 140

• Q5

Product of two integers is –48. If one of the integers is –6 then the other is

Marks:1

8.

##### Explanation:

Let the other integer be x.

According to the question.

x –6 = –48

or,     x = –48 –6

or,     x =  + 8