KVPY2015MathematicsPermutation and Combination
How many ways are there to arrange the letters of the word EDUCATION so that all the following three conditions hold? the vowels occur in the same order (EUAIO); the consonants occur in the same order(DCTN); no two consonants are next to each other.
Options
- A15
- B24
- C72
- D120
Correct answer
A. 15
Step-by-step solution
first arrange EUAIO 1 . array c For consonant ^ E | U | A | I | O 6 4 (1) array 6 4 =15