Answer:
The answer to number 7 is -1.25
The answer to number 8 is 1.25
21 total fruit. That is 7 in 21 chance it will be a grape or 7/21 which is simplified to 1/3 chance.
There are, 3 x 2 x 1 = 6 possible ways of arranging the three digits. Therefore in that set of 720 possibilities, each unique combination of three digits is represented 6 times. So there are 720 possible combinations.
Answer:
The common for the second question is 30
