How to know if processor is dual core or quad core?

[UltraUmair]

It might be a dumb question, but I wanna ask.

How to know if processor is dual core or quad core?

I'm looking at a Lenovo laptop's specification and it only says this:

Intel® Core™ i5-4210U Processor (1.7 GHz, 2.7 GHz with TurboBoost, 3 MB cache)

It doesn't even says quad core or dual core... I know its 4th generation since its 4210U, but I wanna know if its dual core or quad core..

Can anyone tell me from this data or we need more details to find it out?

 

[MeteorsRaining]

It's a Hyperthreaded Dual core.
http://ark.intel.com/products/81016/Intel-Core-i5-4210U-Processor-3M-Cache-up-to-2_70-GHz

 

[USAFRet]

looking up the actual specs at Intel.com might lead you to the answer you seek.
http://ark.intel.com/products/81016/Intel-Core-i5-4210U-Processor-3M-Cache-up-to-2_70-GHz