If k is an integer, what is
k + 1
/2
!
? Why?

If than however any divided by 2 is in .

But it is not so simple.

If is odd then is even but when even number is divided by 2, you get an odd number which is in .

However if is even then is odd and when we divide that by 2, you get a number like for example which is not in but rather inside . There are fortunately no irrational numbers.

There is also a problem with zero, zero is neither odd nor even but still an integer. If your happens to be -1, , and zero divided by 2 is still just 0 which is in .

So to sum up,

If is odd and not -1, then .

Or to put it in math .

If is even or -1, then .

Or to put it in math .

Notes:

is a set of integers.

is a set of rational numbers.

means integers are a subset of rational numbers, that is, every integer is a also a fraction, however not every fraction is an integer.

Hope this helps :)

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.