| |
GeekInterview.com > Placement Papers > CTS
| Print | |
Question: Sum of Numbers
Answer: If all 6 are replaced by 9 then sum of all the numbers from 1 to 100 is? |
| October 10, 2008 05:14:59 |
#2 |
| madhavimca |
Member Since: October 2008 Total Comments: 1 |
RE: Sum of Numbers
|
Sum of 1....100=(100(101))/2 [formula n(n+1)/2]
The no '6' occurs at 10 times in 1st place from 1....100
so 10*3=30 [6 is incremented by 3]
At 10th place, no '6' occurs 10 times from 1....100
so 10*30=300
sum=5050+300+30 =5380
Ans:5380 |
| |
Back To Question | |
