4 +ve numbers are arranged in the increasing order.the first 3 form an AP.the last 3 form a GP.the first and the last term differ by 30.find the sum of all the terms.this one is good!!!

Sathyaram , u must be missing something out like the the no should be integers, or something else

This is becoz infinite such posiibilities r there with such a case.

for example one such series is

0,(7.5),(15)(30) is one of the possible example. infinite other solutions can exist. First mentiion the required condition.

Sry,all of the terms are to be integers.there is a unique solution in integers. ;)

dude it was good question i think im right terms are- 18,27,26,48

equation would be a=d^2/(30-3d) which is satisfied by only 9 if a is a natural number