1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
My name is Ann [436]
3 years ago
6

How many strings of 12 decimal digits begin with "248" or consist only of even digits?

Mathematics
1 answer:
Zepler [3.9K]3 years ago
5 0
<span>We need to find the number of strings in each of the two cases and then subtract the number that are in both. That is Event A or Event B = Event A + Event B - Event A and B. For strings starting with "248", the remaining 9 digits each have 10 possible values(0-9), so there are 9^10 such strings. For only even digit strings, each of the 12 digits has five possible values(0,2,4,6,8), so there are 12^5 such strings. Only even digit strings starting with "248" would have five possible values for the remaining 9 digits, so there are 9^5 such strings. There for the number of strings of 12 digits beginning with "248" or consisting of only even digits is 9^10+12^5-9^5, or 3,486,974,184 strings.</span>
You might be interested in
Pleae help me i will mark you brainliestttttttttt
muminat

Answer:

The last one.

Step-by-step explanation:

7 0
3 years ago
1. Which of the following has a value of 24?
Alja [10]
D has a value of 24.
V121 is 11, so 13 + 11 is 24
6 0
3 years ago
Read 2 more answers
Factor the expression completely over the complex numbers.<br><br> y^4+12y^2+36
Brums [2.3K]
Y⁴ + 12y² + 36
Now factorize the expression
y⁴ + 6y² + 6y² + 36
= y²(y² + 6) + 6(y² + 6)
= (y² + 6) (y² + 6)
<span>Now 6 is not the perfect square and according to rule, binomial can not be factored as the difference of two perfect squares.
</span>so multiply both.
(y² + 6)² is the answer.
7 0
3 years ago
Read 2 more answers
Complete each calculation using the distributive property.
Alisiya [41]
What are the answer options?
7 0
3 years ago
mr ogata drove 276 mies from his house to los angeles at an average speed of 62 miles per hour. how long did it take him to get
Ilia_Sergeevich [38]
About 5 hours. I did this by dividing and rounding 276 by 62. Hope this helps!
4 0
3 years ago
Other questions:
  • There are 7 green marbles, 8 blue marbles, and 4 yellow marbles. What is the chance, as a fraction, of drawing a blue marble, an
    13·2 answers
  • A shrub in Pam's back yard is about 1 3/8 feet tall. A small tree in her back yard is 7 times as tall as the shrub. About how ta
    14·2 answers
  • Can someone help me with this one
    12·1 answer
  • Could a square with whole number side lengths have the same perimeter as the dog pen? The same area
    10·2 answers
  • what is the value after 7 years of a car that originally costs $25,000 rate if it depreciates at a rate of 8% per year ?round yo
    13·1 answer
  • Consider the following data on 20 chemical reactions, with Y = chromatographic retention time (seconds) and X = molecular weight
    8·1 answer
  • If it's $5 for 4 pounds of apples, how much does 1 pound cost?
    13·2 answers
  • List two pairs of adjacent angles.
    8·2 answers
  • a card is drawn from a well-shuffled deck of 52 cards. Find the probability of drawing a 9 of spades.
    6·1 answer
  • Date: / ot of so from the tind the value proportion:x: 35:98:60. 2​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!