Mathematics, 27.09.2019 08:30, marcoantonioperezpan

How many 3 digit numbers can be created where one of the digits is 6 and the sum of the digits is 18? ( digits can be repeated)

Answers: 2

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Answers

615,624,633,642,651,165,264,363,462,561,156,246,336,426,
516,426,246,651,642,624,615,561,462,264,165.
I think more than this no possibilities are available.

answered: batmandillon21

Let's list the requirements:

Every number you create must have 3 digits.
These 3 digits must add up to 18.
One of the digits is 6.
Digits can be repeated.

Try some of the easier numbers first. If one digit is 6, and the other two digits add up to 18, then possibilities include 666 (6+6+6=18, as required).

933 won't work, because it doesn't contain a 6, as required.

163 won't work, since the digits don't add up to 18.

See the pattern here?

What about 684? Do the digits add up to 18? does 684 include a 6?
What about 864? Same questions...
Please experiment with this for a while. Then count the possibilities you have identified.

answered: Guest

i dont understand the question? ?

step-by-step explanation:

answered: Guest

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.