Latest TCS Aptitude Question SOLUTION: Find the sum of number between 200 and 300, which is multiple of 3?

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(#M40024543) TCS question Keep an EYE

Find the sum of number between 200 and 300, which is multiple of 3?

Asked In TCS asxa asxaxax (10 years ago)

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tejasvi gamini   (10 years ago)

n=33,a=201,l=297
therefore s=n/2[2a+(n-1)d]
=8217

Is this solution Helpfull? Yes (22) | No (5)  

ushank  (10 years ago)

sn=34/2(201+300)=8517

Is this solution Helpfull? Yes (8) | No (4)  

sandy  (10 years ago)

sorry guys
wrong calculated
sum of multiple of 3 between 200 and 300 first num is 201 and last num is 300
as they are multiples we can take 3 as common
so 3(67+68+69+70+........+99)
as they are in a.p sum of them will be (n/2)[2a +(n -1)d]; here n is 33
n=33
a=67;d=1
so 3(33/2)(2*67+((33-1)*1)=8715

Is this solution Helpfull? Yes (8) | No (11)  

Stuti Garg  (10 years ago)

8217 since number of terms is 33.

Is this solution Helpfull? Yes (6) | No (6)  

sandy  (10 years ago)

i think ans is 175134
sum of multiple of 3 between 200 and 300 first num is 201 and last num is 300
as they are multiples we can take 3 as common
so 3(67+68+69+70+........+100)
as they are in a.p sum of them will be (n/2)[2a +(n -1)d]; here n is 34
3(34/2)[2(67)+33(100)]=3*17(134+3300)=175134

Is this solution Helpfull? Yes (4) | No (14)  

Saddi  (10 years ago)

actually we have to find out the sum off 201+204+207+.....+300 this is in AP
If the no of factors of 3 between 200 and 300 is n, then 300 = 201+(n-1)3 or, n =34. So the sum = (34/2)(201+300) = 8670.

Is this solution Helpfull? Yes (2) | No (4)  

tejasvi gamini   (10 years ago)

sum is 8217,n=33,a=201,l=297,d=3

Is this solution Helpfull? Yes (2) | No (4)  

palakurthy tanuja  (10 years ago)

201 to 300.a=201,n=3 tn=a+(n-1)d=>300=201+(n-1)3.n=34
(34/2)(201+300)=8517

Is this solution Helpfull? Yes (1) | No (3)  

shiva  (9 years ago)

sum is 8217,n=33,a=201,l=297,d=3

Is this solution Helpfull? Yes (1) | No   

suphia aftab  (10 years ago)

ans is 168(204+300)/3

Is this solution Helpfull? Yes | No (5)  

koushik kumar dey  (10 years ago)

sn=33/2(201+300)=8266

Is this solution Helpfull? Yes | No (6)  

raswitha  (10 years ago)

sum in ap=n/2(2a+(n-1)d)
n=34,a=201
so sum=8517

Is this solution Helpfull? Yes | No (1)  

Guru Pranav  (10 years ago)

8517 will be the correct answer !!!

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