Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
48.9 × 3.95 – 2.97 + 17.86 = ?
Study the given letter series and answer the question that follows.
KIOXJETRULEBACKJMN
How many such vowels are there each of which is immediately followed by atleast two consonants appearing together in the above series?