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
VMariaS [17]
3 years ago
6

How many times does the digit 7 appear among the terms of the sequence of consecutive integer numbers 7, 8, 9, ...., 777?

Mathematics
2 answers:
harina [27]3 years ago
7 0

Answer:

It appears 234  times

Step-by-step explanation:

For first 6 hundreds i.e, 17-107, 117-207, 217-307, 317-407, 417-507, 517-607, there are 20 sevens for each. Which gives a total of 20*6 = 120 sevens.

The number '7' along with this makes a total of 121 sevens.

From 617-707, there are 28 sevens. TOTAL = 121 + 28 = 149

From 708-716, there are 9 sevens.

Now, from 717-777, we have a total of 76 sevens

Adding these all makes total= 149+9+76 = 234

Dahasolnce [82]3 years ago
4 0

Answer:

234 times

Step-by-step explanation:

<u>Number of times the number 7 appears in a hundred</u>

7 as units digit (07-17-27 ..... 97): 10 times

7 as tens digit (70-71-72..... 79): 10 times

20 times the digit 7 appears in first one hundred (0-100)

Let's calculate how many times 7 would be as units or tens in 7 hundreds

20X7 = 140 times digit 7 appears until number 699

<u>Now, from 700 to 777</u>

7 as hundreds digit (700-701-702 .... 777): 78 times

7 as tens digit (770-771-772 .... 777): 8 times

7 as units digit (707-717-727....777): 8 times

78 + 8 + 8 = 94 times the digit 7 appears in the range 700 - 777. Plus 140 times

140 + 94 = 234 times

You might be interested in
Can y’all help me on question 23?!
Wittaler [7]

Answer:

Option D. 5x + 12y + 4z is the corrct one.

5 0
3 years ago
Read 2 more answers
How do you change 20.25 into a fraction
bearhunter [10]

Answer:

81/4

Step-by-step explanation:

I know this because I did this before

7 0
3 years ago
Read 2 more answers
What is the probability that a two-digit number selected at random has a tens digit less than its units digit
Reika [66]

The probability that a two-digit number selected at random has a tens digit less than its units digit is 0.2667 (4/15).

A=24B=90\\\\P=A/B\\\\P=24/90\\p=4/15

There are 90 two-digit numbers (99-9). Of these, six numbers are divisible by 15 (15, 30, 45, 60, 75, 90). This is also divisible by 5. Therefore, the preferred case is 30-6 = 24. Therefore, the required probability is 24/90 = 4/15.

The probability of an event can be calculated by simply dividing the number of favorable results by the total number of possible results using a probabilistic expression. Whenever you are uncertain about the outcome of an event, you can talk about the probability of a particular outcome, that is, its potential.

Learn more about probability here: brainly.com/question/24756209

#SPJ4

6 0
2 years ago
The doctor's office where you work needs to store eight filing cabinets with patient information in one of three secure storage
ikadub [295]

Answer:

9 x 7.5

Step-by-step explanation:

Just 9 x 7 = 63 > 55

8 x 5 = 40 < 55

5 x 10 = 50 < 55

Please mark brainliest

8 0
3 years ago
The function h is defined by h (x) = 5x - 2.
Shtirlitz [24]

Answer:

x=2

Step-by-step explanation:

h(8)=5x-2

+2        +2

10=5x

Divide both sides by 5

x=2

5 0
3 years ago
Read 2 more answers
Other questions:
  • Represent real-world situations a rectangular piece of sheet metal is rolled and riveted to form a circular tube that is open at
    8·1 answer
  • Turning improper fractions into mixed numbers . Help?
    10·1 answer
  • A florist makes 24 bouquets. She uses 16 flowers for each bouquet. Altogether, how many flowers does she need?
    7·2 answers
  • The sum of twice a number and 5 is less than 17
    13·1 answer
  • Need help &amp; Thank you !!!!
    13·1 answer
  • $4.30 makeup; 40% discount; 6% tax
    5·1 answer
  • Solve each using mental math. ​
    15·1 answer
  • Give good evidence to back it up and i will give brainliest. thnx to whoever helps.
    8·1 answer
  • I need help with this please
    14·2 answers
  • 1. Which of the following statements is NOT a property of parallelograms?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!