for adobe

[Dhruvik_82]

a friend of mine is selling his Intel 

Core i3-9700 2.4ghz

8gb RAM

250gb Hard Drive.

240 gb SSD

8gb ram

is this good enough to buy for photoshop , illustrator , xd , after effects?

[Just Shoot Me]

Not really although those programs will install, depending on the operating system installed which you didn't mention, but run SLOOOOOOOOW.

[Ussnorway]

if you added another 12G of Ram that would do the job very well

[davescm]

There are a few things missing from your list such as GPU (some functions in photoshop require a GPU with dedicated VRAM); Operating system; how much free space you will have on the hard drive; display pixel dimensions.

Photoshop uses hard drive space to swap out RAM when working with files. That "scratch" disk space requirement can easily exceed 30GB alone and is not mentioned in the system requirements.

The minimum system requirements for the various applications you mention are below:

https://helpx.adobe.com/photoshop/system-requirements.html

https://helpx.adobe.com/illustrator/system-requirements.html

https://helpx.adobe.com/xd/system-requirements.html

https://helpx.adobe.com/after-effects/system-requirements.html

Dave