00:01foreign
00:17is equal to directly
00:21exactly we know formula n into n plus 1 upon 2 api ki n terms ke sum ka formula yi
00:27ho
00:27ta hai s 30 kya ho jayega sum of first 30 terms ka formula 30 into 30 plus 1 upon
00:372
00:37echa hai 20 ka kya ho jayega 20 into 20 plus 1 20 into 21 upon 2 minus 10 into
00:4811 upon 2
00:50ab yye kya ho gaya upatwa a gaya maare paat me 30 into 31 upon 2
00:56nitsa hum 20 ko kya licksakta hai 20 ka umeer se bhi licksakta hai
01:01jay 20 into 21 upon 2 ka ume licksakta hai 10 into 2 into 21 upon 2
01:08jishe hum further licksakta hai 10 into 40 21 to the 42 42 upon 2
01:16woh kya kya ta ki abe 10 common le seke 10 common le lya
01:20to yeh a gaya 42 ish meh bhi 10 common a gaya minus 11 upon me 2
01:27woh kya hai 42 ime seh emne 11 ko minus kiya
01:32to yeh humare paat me kya jayega 42 ime seh 11 ko minus kiya
01:36to yeh a gaya 31 into 10 upon me 2
01:41woh kya hai 30 into 31 upon 2
01:4430 into 31 upon 2
01:4731 se 31 cancel 2 se 2 cancel 10 threza 30
01:58to yeh 3 to yeh 3 a gaya answer
02:01final answer hai humare 3
02:04kyunki a peh 10 threza 30
02:07kyunki a peh 10 threza 30
02:07kyunki a peh 10 threza 30
02:07kyunki a peh 10 threza 30
02:07kyunki a peh 10 threza 30
02:07kyunki a peh 10 threza 30
