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enot [183]
3 years ago
7

How many 3-digit numbers contain exactly one 1?

Mathematics
2 answers:
Tems11 [23]3 years ago
8 0
Given a 3-digit number containing exactly one "1". 
(ASSUME base-10 numbers, so digits are from 0-9)

Number contains exactly one "1", therefore the two other digits are limited to 2,3,4,....9,0.
If the "1" is in the leftmost position, there are 9*9=81 ways to arrange the second and third positions.
If the "1" is in the second or third position, then there are 8 choices for the leftmost digit (2-9), and 9 choices for the other digit for a total of 2*8*9=144 arrangements.
So the total number of 3-digit numbers containing exactly one "1" is 81+144=225.
marysya [2.9K]3 years ago
6 0
I believe the answer would be 17, because 100, 210, 201, 301, 310, 401, 410, 501, 510, 601, 610, 701, 710, 801, 810, 901, 910
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Write a problem in which $180 would be a reasonable answer​
ad-work [718]

Answer: Word problem: Mya goes to a carnival and buys food for her and her friends.  She buys 5 funnel cakes that were $20 each. She buys 10 buckets of popcorn that were 8 dollars each.

Regular problem: $20+$15+$20+$100+$25=180

Step-by-step explanation: I didn't know what you needed. I'm sorry if that's not it, but hope it helps.

7 0
2 years ago
BRAINLIESTTTTT ASAP!
GaryK [48]
The bracelets cost more than the comic books
8 0
3 years ago
1+4=5<br> 2+5=12<br> 3+6=21<br> 8+11=?
MariettaO [177]
Oh, I SEE what da pattern is! =D
You see, like in this problem:
2 + 5 = 12
They did 5 times 2 = 10, plus da 2 in da problem = 12.
Same with 3 + 6 = 21, 6 times 3 = 18, 18 plus da 3 given in da problem = 21.
Just like 1 + 4 = 5, 4 times 1 = 4, plus da 1 in da problem = 5.
SO,
with that strategy, 8 +11 = 96, because 8 times 11 = 88, plus da 8 given in da problem = 96.
I hope I helped! =D
6 0
3 years ago
Please answer ASAP this is due tomorrow
Kay [80]

Answer:

227.08in^2

You want to find the surface area for this problem. SA=2lw+2lh+2hw

Step-by-step explanation:

L=2.5

W=7.4

H=9.6

SA=2lw+2lh+2hw

SA=2(2.5x7.4)+2(2.5x9.6)+2(9.6x7.4)

SA=37+142.08+48

SA=227.08in^2

8 0
3 years ago
Give the domain and range.
3241004551 [841]

Answer:

The correct answer is a.

Step-by-step explanation:

The domain is the plotted points on the x-axis.

The range is the plotted points on the y-axis.

(-3, 3), (0, 0), (2, -2)

Domain {-3, 0, 2}; Range: {3, 0, -2}

8 0
3 years ago
Read 2 more answers
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