Seq Series
for this questions i first calculated that there will be a total of 45 elements in all the 9 rows
the tenth row starts from 46th element so i did summation 56 elements - summation 46 elements i got 1525 but ans is 1505
8 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.45 terms in 9 rows, so first term is 46th. Now (sum of all terms in 10th row) is 10/2(2*(2+45 3)+9 3)=5*(2 (137)+27)=5 (274+27)=5*(301)=1505
this is what i did the bottom half below 46 -> 56 i did summation till 56 terms - summation till 46 terms
It should be sum of 55 terms-Sum of 45 terms.
Like for instance 3rd row sum us (sum of 6 terms - sum of 3 terms and 6=1+2+3 and 3=1+2)
oh ok
i get confused when it comes to no of terms
thx
+solved @SirLancelotDuLac
Post locked and archived successfully!
Archived by
<@700658749416669194> (700658749416669194)
Time
<t:1732180688:R>
Solved by
<@1075951732460376214> (1075951732460376214)