Im having trouble with this question if you guys know the answer could u please give the formula that you used and how you got it THANKS!
- Each number from 1 to 60 is written on one of 60 index cards. The cardsa rew arranged in rows with equal length and no cards are left over. The sum of the numbers in each row is 305. How many rows are there?
Could you guys tell me whats the "T1" the "n" the "d" "tn" as well thanks!
these are the formulas my teacher said to use: Sn= n[2(t1) + d(n-1)] divided by 2
and Sn= n(ti + tn) divided by 2
- Each number from 1 to 60 is written on one of 60 index cards. The cardsa rew arranged in rows with equal length and no cards are left over. The sum of the numbers in each row is 305. How many rows are there?
Could you guys tell me whats the "T1" the "n" the "d" "tn" as well thanks!
these are the formulas my teacher said to use: Sn= n[2(t1) + d(n-1)] divided by 2
and Sn= n(ti + tn) divided by 2
-
Very simple as I see it: 1 + 2 +....+ 60 = 61x60/2 = 1830
So, the total sum = 1830. Now, to find the number of rows: 1830/305 = 6.
t1 = 1, d = 1 n = 60, tn = 60.
Tell your teacher that instead of giving you a cockamamie formula he/she should better explain what it means. Gauss at the age of 6 was able to derive this formula!
So, the total sum = 1830. Now, to find the number of rows: 1830/305 = 6.
t1 = 1, d = 1 n = 60, tn = 60.
Tell your teacher that instead of giving you a cockamamie formula he/she should better explain what it means. Gauss at the age of 6 was able to derive this formula!