GMSEMBA wrote:
Pls help to solve this problem..
The letters D, G, I, I and T can be used to form 5-letter strings such as DIGIT or DGIIT. Using these letters, how many 5-letter strings can be formed in which the two occurrences of the letter I are separated by at least one other letter?
(A) 12
(B) 18
(C) 24
(D) 36
(D) 48
This is from OG 2018. I could not understand the logic even when i looked at the explanation..
This question is discussed here: https://gmatclub.com/forum/the-letters-
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