In the case of d=0 all the terms will be same then we if we consider first term as ‘a’ then tenth term will also be ‘a’ and hence the ratio will be 1:1.

Is there any error in my reasoning here?

Yes ideally the question should have stated “with distinct terms”. The original CAT question did not, but then there were options there…

In the last problem d can also be 0 in which case all the terms will be the same

Nice spot Chirag. However, in that case the ratio of terms will not even be defined!

regards

J

Hi j,

In the case of d=0 all the terms will be same then we if we consider first term as ‘a’ then tenth term will also be ‘a’ and hence the ratio will be 1:1.

Is there any error in my reasoning here?

Yes ideally the question should have stated “with distinct terms”. The original CAT question did not, but then there were options there…

regards

J