Four words have been given out of which three are alike

Solution

Number of letters (as per English alphabetical series) between the letters of the word are in consecutive prime numbers like (2,3), (5,7) etc DGK: Number of letters between D and G is 2, Number of letters between G and K is 3. LRZ: Number of letters between L and R is 5, Number of letters between R and Z is 7. NVF: Number of letters between N and V is 7, Number of letters between V and F is 9. SVZ: Number of letters between S and V is 2, Number of letters between V and Z is 3.