If all the letters in the word INSPIRATION are arranged in alphabetical order from left to right in such a way that vowels are arranged first followed by consonants, then how many letters are there in between O and S after the arrangement?

Arrange the vowels alphabetically first, yielding A, I, I, I, O. Then arrange the consonants alphabetically to get N, N, P, R, S, T. Combining these gives the final sequence as A, I, I, I, O, N, N, P, R, S, T. Looking at this sequence, the letters between O and S are N, N, P, and R, which counts to 4.

• Thanks
• Wrong explanation