CAT
Exam
1+5+14+30+-------------------------------20 terms
Read Solution (Total 5)
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- 1^2+0=1
2^2+1=5
3^2+5=14
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20^2+2470=2870 - 10 years agoHelpfull: Yes(2) No(4)
- @animesh can u pls tell me how 2470 has come..pls show me the calculation
- 10 years agoHelpfull: Yes(2) No(0)
- 16170
as the terms are 1,5,14,30,55,91,140,204,285,385,506,650,819,1015,1240,1496,1785,2109,2470,2870 - 10 years agoHelpfull: Yes(2) No(0)
- ans is 16176..
- 10 years agoHelpfull: Yes(0) No(0)
- 1+4=5
5+9=14
14+16=30
..
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2870+21^2=3311 is the series..
now the sum of 20 terms 11+5+14+30+......+3311=19482 - 10 years agoHelpfull: Yes(0) No(1)
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