Option D:
is positive product.
Solution:
<em>If the negative sign is in even number of times then the product is positive.</em>
<em>If the negative sign is in odd number of times then the product is negative.</em>
To find which product is positive:
Option A:

Here, number of negative signs = 3
3 is an odd number.
So, the product is negative.
Option B:

Here, number of negative signs = 3
3 is an odd number.
So, the product is negative.
Option C:

Here, number of negative sign = 1
1 is an odd number.
So, the product is negative.
Option D:

Here, number of negative sign = 2
2 is an odd number.
So, the product is positive.
Hence option D is the correct answer.
is positive product.
The answer to this question would be: 2*52! -1
In this case, the card is either picked up by Naoko or they are not picked up. That means there are two possible outcomes for each card. For 52 card, the possibility should be:
2*52!
If Naoko needs to pick at least one, the possibilities become one less because "no card picked" possibility is ruled out
Answer:
I believe that the answer is over by 3,-1
Step-by-step explanation:
and also is there any a,b,c,d, multiple choice answers?
Answer:
6
Step-by-step explanation:
5+8+6+5+10+7+1=42
42/7=6