FREE MATHS CLASS & TEST SERIES | ONE FAMILY | NUMBER SYSTEM - 3 | SUBBARAJA

[@LavanyaInbakumar]

Sn=a(r^n -1)/r-1, A=3, r=6/3 so 2, Substitute in formula 3(2^n-1)/1 1536=3(2^n-1) 1536/3=2^n-1 512=2^n-1 Take a lcm for 512 is 2 power 9(2^9) So, 2^9=2^n-1 Left side right side base are equal so n=9 , Then n value substitute in formula , 3(2^9-1) 3(1024-1) 3(1023) 3069 answer is 3069

[@Raja-l7p4k]

Apo question wrong la, sum nu mention panalaye 1536 ku, it is mentioned as last number thana

[@Raja-l7p4k]

N =10 solreega then y u took 9 in the sum

[@LavanyaInbakumar]

@@Raja-l7p4k raja intha sum 10 std maths book la 2.8 la irukku paarunga

[@LavanyaInbakumar]

@@Raja-l7p4k 2 power 9 in left side and 2 power n in right side So left side and right side base equal so power also equal, and right side la -1 iruuk athu left la vantha +1 so 10

[@Raja-l7p4k]

@@LavanyaInbakumar 3 ( 2^9-1) intha part than enaku puriyala, 10 thana varum

[@Vicky1811]

Spot test answer explain pannunga sir

[@mleelam8248]

Tq sir

[@Aishugreeninker]

Evaluate. 5 square +10 square+... sum answer.

[@punithaanu252]

82775

[@karthickravichandran2146]

Enaku 5775 ungaluku

[@Aishugreeninker]

@karthickravichandran2146 enakum 5775 common number 5 square velila edutha (1+2+3+....) (1+2+3+... formula n(n+1)/2 thana.

[@karthickravichandran2146]

@@Aishugreeninker yes

[@GayathriKanagaraj-sb8li]

1+2+3+.........+k=325,1^+2^3+3^3+k^3 value

[@Guganmahahema986]

Sir, voice kekla

[@harikeshharikesh-f8z]

Yes sir

[@hasinimugil7809]

Thank you sir

[@gokul-r6m]

Sir❤❤❤❤❤❤😊😊😊😊😊😊😊😊🎉🎉🎉🎉🎉🎉🎉🎉

[@mahalakxmi9436]

3+6+2+....1536 a=3,r=2 ,tn=1536 so we have to find out first tn formula in GP tn =ar^n-1 1536=3*2^n-1 then we get n=10, substitute this in sn GP formula a=3,r=2,n=10 finally we get the answer 3069

[@ashwinis5662]

Nice class

[@GayathriKanagaraj-sb8li]

325^2 ans please

[@meenatamil3426]

325*325=105625

[@priyaaabi3606]

3+6+12+......1536 intha sum any boby know pls tell

[@karthickravichandran2146]

Gp

[@priyaaabi3606]

Ok

[@meenatamil3426]

GP - tn formula n Kandu pidinga Sn formula La n value apply pannunga

[@kavithasundar9512]

Vazhu 7 sir.. In 10th new Tamil

[@harikeshharikesh-f8z]

49&255

[@harikeshharikesh-f8z]

121&1331

[@harikeshharikesh-f8z]

42

[@zareenabegam978]

Ithula n thane 1536

[@harikeshharikesh-f8z]

River

[@vasugivasugi4925]

1600,sir

[@harikeshharikesh-f8z]

1600

[@harikeshharikesh-f8z]

மலர்

[@harikeshharikesh-f8z]

3069

[@nishukanijam3998]

Thank you sir

[@bhuvi567]

1600