ur right because dilip was married to avantika 1st and angu was like 6-7 yrs old....karthik came later...so he is older but her if they wanna pretend like karthik is older its all good and it seems better if he is older.... 😃
no kartik is the elder bro. all the matter was pre -planed by hus/wife to become crorepati.even dadi dont know the matter.all the incident had taken place after dilip/naina's marriage.
Karthik is older, he even said so in today's epi... Here is what I think: Dilip and Naina were married, but had no money (they already had Karthik) then they hatched a plan to trap avantika (rem Kripa's dad said they first started their businesss in delhi?) well probably Dilip went to delhi and married avantika...while naina came and acted as the governess..then they did the whole drama and sent avantika to jail....so Karthik was probably living with Dadi or osmething