5 25 61 113 181 265 365
Diff of above 20 36 52 68 84 100
Diff of above 16 16 16 16 16
Can you solve this???? series x
Page no : 2
Hari Kishore
(nc)
(21 Points)
Replied 03 August 2012
2*2+1*1=5
4*4+3*3=25
6*6+5*5=61
8*8+7*7=113
10*10+9*9=181
12*12+11*11=265
14*14+13*13=365
It is addition of square of even no. series & odd no. series.
divya deepthi
(CA)
(51 Points)
Replied 04 August 2012
Hi,
5 +5*4 =25
25+(5+4)*4= 25+9*4 = 61
61+(9+4)*4 = 61 +13*4 = 113
113 + (13+4) * 4 = 113+17*4 = 181
181 + (17+4)*4 = 181+21*4=265
265 + (21+4)*4=265+25*4=365
manish
(article)
(25 Points)
Replied 04 August 2012
(1^2)+(2^2)=5
(3^2)+(4^2)=25
(5^2)+(6^2)=61
(7^2)+(8^2)=113
(9^2)+(10^2)=181
(11^2)+(12^2)=265
(13^2)+(14^2)=365
^ repesents power
CA Rohit Maurya
(Associate)
(213 Points)
Replied 04 August 2012
| Originally posted by : CA Sonia Vanjani | ||
 |
25-5= 20 61-25= 36 113-61= 52 181-113= 68 The gap between d net results of differences is 16 so 68+16=84 Therefore 181+84=265 84+16=100 Therefore 265+100= 365 |
correct. |
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