CTET 2 Math and Science 7 Jan 2022 Paper

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Question : 31 of 150

Marks: +1, -0

If x is the sum of integers between -9 and -1 and y is the product of integers between -3 and 5, then what is the value of x + y?

-50
-45
-40
-35

Solution:

Integers between

-9

and

-1=-8,-7,-6,-5,-4,-3,-2

So,

{\sum}=-35

i.e

x

Integers between

-3

and

5=-2,-1,0,1,2,3,4

So, product

=0

i.e

y

x+y=-35+0

⇒ x+y=-35

∴

The value of

x+y

is

-35

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