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
Amiraneli [1.4K]
2 years ago
12

Which numbers between 10 and 99 have digits that differ by 4 and add to 6

Mathematics
1 answer:
madreJ [45]2 years ago
8 0

Answer:

A

Step-by-step explanation:

Correct option is A)

Let a 3-digit number ABC

Case (1)

If A=7, then B  and  C can be any digit but not 7

so, total 9 digits (0,1,2,3,4,5,6,8,9) can replace B and C

Then total such combinations =1(9)(9)=81

Case (2)

If B=7  then A can be any digit but not  0 and 7, because if A=0 it will be a 2-digit number.

And C can be any digit but not 7

Then total combinations =(8)(1)(9)=72

Case (3)

If C=7  then A can be any digit but not 0 and 7, because if A=0 it will be a 2-digit number.

And B can be any digit but not 7

Then total combinations =(8)(9)(1)=72

So, total numbers between 99 and 1000 which have exactly one of their digits as 7 are =81+72+72=225

You might be interested in
Points A (3,8) and B (-4,8 are located on a cooridinate plane. Find the distance between them.
aleksandrvk [35]
-4 + 3 = 7
8=8
(7,0) = DISTANCE BETWEEN THEM 
7 0
3 years ago
tom jogged 3/10 mile, betsy jogged 5/10 mile, and sue jogged 2/10 mile. who jogged a longer distance than 4/10 mile?
Inga [223]
Betsey jogged the longer distance.
5 0
3 years ago
What is the volume of the cone if the base is 18 and the height is 22
jarptica [38.1K]

Answer:

7464.42

Step-by-step explanation:

looked it up

7 0
3 years ago
What is .00762 as a multiple of a power of 10​
lys-0071 [83]

Step-by-step explanation:

0.00762 = 7.62 \times  {10}^{ - 3}  \\

3 0
3 years ago
Please help i’ll give brainliest
Luba_88 [7]

In a 45 - 45 - 90 right triangle, the hypotenuse is √2 · legs = hypotenuse, so legs=\frac{\sqrt{5}}{\sqrt{2}} and to rationalize the denominator all we have to do is multiply the numerator and denominator by √2. \frac{\sqrt{10}}{2}.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the line that is the best fit for the data.
    6·1 answer
  • A water balloon holds 904.78in ^3 of water. What is the diameter, in inches, of the balloon? Round to the nearest hundredth.
    14·1 answer
  • 3) The City of Oz has to repaint its cylinder-shaped water tower. Only the top and sides need to be painted. If the water tower
    6·2 answers
  • Can someone please help me ?!
    11·1 answer
  • Amy purchased a brand-new mountain bike, which she's riding through
    14·1 answer
  • What is the ratio of a : b, knowing that a — b = 3 <br> a + b = 5
    13·1 answer
  • Fill in missing information to make the equality true: <br> (... +2a)2 = … +12ab2+4a2.
    13·1 answer
  • Last question (arc length and area) thanks!!!
    12·1 answer
  • Please Help Me i will Give Brainliest
    7·2 answers
  • I need help please last question of test
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!