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Started By
Message
can anyone help with these 2 math problems?
Posted on 11/1/15 at 5:27 pm
Posted on 11/1/15 at 5:27 pm
find the next number in the sequence.
7, 16, 8, 27, 9
choices:
27
10
40
37
2,7,26,101,400
choices:
1595
800
595
1840
On the first one I was thinking that the relationship between the first, third, and fifth numbers is independent of the relationship between the second, fourth, and missing sixth number. The difference between the second and fourth number is 11 but if you add 11 to 27 you get 38 and that's not an answer.
In the second one, again I think the first, third, and fifth numbers are related (even numbers) and the second, fourth, and sixth are related (odd numbers) leaving choices 1595 and 695. Furthermore I notice in the number 101 there is the same number in the ones and hundreds place, as in the number 1595. But I can't find a connection to the number 7.
Anyone?
Thanks in advance!
7, 16, 8, 27, 9
choices:
27
10
40
37
2,7,26,101,400
choices:
1595
800
595
1840
On the first one I was thinking that the relationship between the first, third, and fifth numbers is independent of the relationship between the second, fourth, and missing sixth number. The difference between the second and fourth number is 11 but if you add 11 to 27 you get 38 and that's not an answer.
In the second one, again I think the first, third, and fifth numbers are related (even numbers) and the second, fourth, and sixth are related (odd numbers) leaving choices 1595 and 695. Furthermore I notice in the number 101 there is the same number in the ones and hundreds place, as in the number 1595. But I can't find a connection to the number 7.
Anyone?
Thanks in advance!
19
Posted on 11/1/15 at 5:28 pm to skeeter531
I think problem 1 is 40.
8x2 is 16, 9x3 is 27, 10x4 is 40
I'm going 1595 for problem 2
Divide a number by the preceding number, you'll see it ranged between about 3.5 and 4. 1595 gives you the most similar answer. Otherwise I don't see a relationship.
8x2 is 16, 9x3 is 27, 10x4 is 40
I'm going 1595 for problem 2
Divide a number by the preceding number, you'll see it ranged between about 3.5 and 4. 1595 gives you the most similar answer. Otherwise I don't see a relationship.
This post was edited on 11/1/15 at 5:32 pm
Posted on 11/1/15 at 5:29 pm to skeeter531
1 is 40
This post was edited on 11/1/15 at 5:31 pm
Posted on 11/1/15 at 5:29 pm to skeeter531
I'm not doing your homework for you.
Mostly because I don't know how.
Mostly because I don't know how.
Posted on 11/1/15 at 5:29 pm to skeeter531
First answer would be 40.
Next number after that would be 10.
Not sure on second.
Second one is 1595.
101-1 times 4 minus 5.
Next number after that would be 10.
Not sure on second.
Second one is 1595.
101-1 times 4 minus 5.
This post was edited on 11/1/15 at 5:33 pm
Posted on 11/1/15 at 5:29 pm to skeeter531
37
1595
1595
Posted on 11/1/15 at 5:30 pm to skeeter531
288
288
288
Posted on 11/1/15 at 5:31 pm to skeeter531
12
Posted on 11/1/15 at 5:33 pm to skeeter531
Best Answer: 7, 16, 8, 27, 9, ...
8*2 = 16
9*3 = 27
10*4 = 40
The next number is 40.
The series is obtained by multiplying the previous number by 4 and then subtracting (n - 1).
1st number = 2 - ( 1 - 1) = 2
2nd number = (4 x 2) - (2 - 1) = 7
3rd number = (4 x 7) - (3 - 1) = 26
4th number = (4 x 26) - (4 - 1) = 101
5th number = (4 x 101) - (5 - 1) = 400
6th number = (4 x 400) - (6 - 1) = 1595
8*2 = 16
9*3 = 27
10*4 = 40
The next number is 40.
The series is obtained by multiplying the previous number by 4 and then subtracting (n - 1).
1st number = 2 - ( 1 - 1) = 2
2nd number = (4 x 2) - (2 - 1) = 7
3rd number = (4 x 7) - (3 - 1) = 26
4th number = (4 x 26) - (4 - 1) = 101
5th number = (4 x 101) - (5 - 1) = 400
6th number = (4 x 400) - (6 - 1) = 1595
Posted on 11/1/15 at 5:37 pm to skeeter531
quote:
2,7,26,101,400
2 x 4 = 8 --> minus 1 for 1st position = 7
7 X 4 = 28 --> minus 2 for 2nd position = 26
26 x 4 = 104 --> minus 3 for 3rd position = 101
101 x 4 = 404 --> minus 4 for 4th position = 400
400 x 4 = 1600 --> minus 5 for 5th position = 1595
Posted on 11/1/15 at 5:37 pm to demtigers73
quote:
Best Answer: 7, 16, 8, 27, 9, ...
8*2 = 16
9*3 = 27
10*4 = 40
The next number is 40.
The series is obtained by multiplying the previous number by 4 and then subtracting (n - 1).
1st number = 2 - ( 1 - 1) = 2
2nd number = (4 x 2) - (2 - 1) = 7
3rd number = (4 x 7) - (3 - 1) = 26
4th number = (4 x 26) - (4 - 1) = 101
5th number = (4 x 101) - (5 - 1) = 400
6th number = (4 x 400) - (6 - 1) = 1595
Would you please show us the common core method of this problem? TIA
Posted on 11/1/15 at 5:39 pm to skeeter531
No.1 my mind tells me 37 but 40 also makes since
1595 is the second one with the sequencing using the number 4 as the multiplier
1595 is the second one with the sequencing using the number 4 as the multiplier
Posted on 11/1/15 at 5:48 pm to skeeter531
thanks for the help! (and it's not my homework lol!)
Posted on 11/1/15 at 5:56 pm to skeeter531
First one is 40.
Time two plus two. Then divide by two. Times three plus three, then divide by three. Next is times 4 plus 4. Then divide by 4. And so on.
Second one I didn't read bc youre dumb
Time two plus two. Then divide by two. Times three plus three, then divide by three. Next is times 4 plus 4. Then divide by 4. And so on.
Second one I didn't read bc youre dumb
This post was edited on 11/1/15 at 5:57 pm
Posted on 11/1/15 at 5:57 pm to Tshiz
quote:
First one is 40. Time two plus two. Then divide by two. Times three plus three, then divide by three. Next is times 4 plus 4. Then divide by 4. And so on. Second one I didn't read bc your dumb
I know how to spell "you're". asswipe.
Posted on 11/1/15 at 5:58 pm to skeeter531
ha...you edited. But you still spelled it wrong. It has an apostrophe.
Posted on 11/1/15 at 6:13 pm to skeeter531
23. It all leads back to 23.
Posted on 11/1/15 at 6:27 pm to DrSteveBrule
You are correct. The relationship for the second problem is you multiply the number by 4 then subtract 1, by 4 then subtract 2, by 4 then subtract 3....and so on.
Posted on 11/1/15 at 6:41 pm to skeeter531
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