Alphabetical Mirror image
There are few images which always have the same reflection (not reversed) as they are in mirror, i.e. In Alphabet: A, H, I, M, O, T, U, V, W, X, Y
Similarly, In Numerical Digits, 0, 8 have the same reflection.
Water Images
Water Images in non verbal reasoning is same as Mirror Images method. basically Water image is just a reflection where top and bottom part of the images changed where left and right side of image remain same. In Mirror image left side and right side changed vice-versa where top and bottom remain same.
Seven Alphabets are same in water image non verbal reasoning, C, D, E, H, I, O, and X. where H, I, O, N, and X same in mirror image reflection trick on non verbal reasoning.