4. Numbers those onlyfactorsone and itselt are called
2 answers:
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Answer:
Seven numbers.
Step-by-step explanation:
Finding the numbers, which are equal to the sum of two odd number and it has to be single digit number.
Lets look into numbers which are odd and single digit.
1 =
∴ Sum of the number is
3 =
∴ Sum of above number is
5 =
∴ Sum of above number is
7=
∴ Sum of above number is
Now, accumlating numbers which are fullfiling the criteria, however, making sure no number should get repeated.
∴ Numbers are:
Hence, there are total 7 numbers, which are equal to the sum of two odd, one-digit numbers.
Answer:
a) Dice and spinner are different objects, with no relation between themselves, and thus her dice rolls and spinning outcomes are independent.
b) probability of her rolling a 4 and spinning an 8.
c) probability of her rolling an even number and spinning a number less than 3.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
A) Are her dice rolls and spinning outcomes independent or dependent?
Dice and spinner are different objects, with no relation between themselves, and thus her dice rolls and spinning outcomes are independent.
B) What is the probability of her rolling a 4 and spinning an 8?
Since the events are independent, we find each separate probability and multiply them.
Probability of rolling a 4:
One side out of 6 on the dice. So
Probability of spinning an 8:
One side out of 8 on the spinner. So
Probability of rolling a 4 and spinning an 8:
probability of her rolling a 4 and spinning an 8.
C) What is the probability of her rolling an even number and spinning a number less than 3?
Since the events are independent, we find each separate probability and multiply them.
Probability of rolling an even number:
2, 4 or 6(3 sides out of 6). So
Probability of spinning a number less than 3:
Two numbers(1 or 2) out of 8 on the spinner. So
Probability of rolling an even number and spinning a number less than 3:
probability of her rolling an even number and spinning a number less than 3.