ANSWER:

No problem in reciting surahs in any sequence you want. 

I heard that we should not change the order of surah in salah. I.e. if in zuhr prayer i recited surah Ikhlas in 1st rakat I should recite falaq or naas surah in second. I should not recite surah dhuha or lahab or any surah b4 ikhlas. Is that true. They also say one should not recite surah naas in 1st rakat so what will he recite in 2nd one!

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