If fourconsecutive letters are selected at random from the English alphabet, then the probability that one of the letters is a vowel is ?

Options
13/23
16/23
11/23
17/23

• Total no. of ways of selecting 4 consecutive letters => 23 [Like abcd, bcde, efgh,..etc]
  No. of ways of having one is a vowel => abcd, bcde, cdef, defg, efgh, fghi, ghij, hijk, ijkl, lmno, mnop, nopq, opqr, rstu, stuv, tuvw, uvwx...
  = 17
  P(one of letter is vowel) = 17/23
  
  Ans : 17/23
• 8 years agoHelpfull: Yes(3) No(0)