Most Important Selected Qs for JEE AdvancedMathematicsPermutation and Combination
Number of words can be formed using all the letters of the work 'HIPHIPHURRAY' in which all H's lie somewhere between R's is
Options
- A(198) 7 !
- B(99)7!
- C(99) 8 !
- D(198) 8 !
Correct answer
A. (198) 7 !
Step-by-step solution
( HHH ),( RR ),( ( I , I ),( P , P ), AYU _ x = ¹² C ₇ 7! 2!2! 1=(198) 7!