SSC JE Electrical Engineering 2017 Set 1 Paper

On reading the English alphabet from the beginning, the place of letters D, I, S, C, E, R, N, S are 4, 9, 19, 3, 5, 18, 14, 19.
On reading the English alphabet from the back, the place of letters of W, R, H, X, V, I, M, H is 4, 9, 19, 3, 5, 18, 14, 19.
Similarly,
On reading the English alphabet from the beginning, the letters of letters A, G, O are 1, 7, 15.
On reading the English alphabet from the back, the position of 1, 7, 15 is Z, T, O letters.