दी गई अक्षर श्रृंखला के स्वरूप को पूरा करने के लिए लुप्त अक्षरों का चयन कीजिए: a a _ b b b _ c c a a a b _ b c _ c

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? DAX 91, BVZ 83, ZQB 75, XLD 67, VGF 59, ?

Complete the given letter series: ABC, GHI, MNO, _______?

Which set of numbers will replace the question mark (?) to complete the following series logically? 13, 28, 49, 64, 85, ?