Answer:
B) x + 1/y times h/g+1
Step-by-step explanation:
We need to divide by
then match with given choices to find the correct equivalent result.
where given choices are:
A) x/y times h/g
B) x + 1/y times h/g+1
C) x+ 1/y divided h/g+1
D) y/x+1 divided g+1/h
So let's divide by
we are allowed to flip the bottom fraction and change division sign into multiplication. So we get:
Hence correct choice is: B) x + 1/y times h/g+1
Answer:
Proved
Step-by-step explanation:
From the given parameters, we have:
i.e. the length of each security numbers
i.e. 2 security numbers
Required
In 513 security numbers, 2 must have matching zeros
To do this, we make use of Pigeonhole principle.
First, we calculate the number of all security numbers not having matching zeros.
Each of the 9 digits can be selected in 2 ways.
2 ways implies that each digit is either 0 or not
So, total selection is:
Apply Pigeonhole principle
The principle states that: suppose there are n items in m containers, where , then there is at least one container that contains more than 1 item.
This means that if there are 512 security number without matching zeros, then there is 1 (i.e. 512 + 1) with matching zeros.
Answer:
x = 55
Step-by-step explanation:
Hope it helps.
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