MHT CET2012MathematicsPermutation and Combination
All letters of the word 'CEASE' are arranged randomly in a row, then the probability that two E are found together is
Options
- A7 5
- B3 5
- C2 5
- D1 5
Correct answer
D. 1 5
Step-by-step solution
Sample space arrangement for the word 'CEASE' =5 ! Here, E 2, C 1, ~A 1, ~S 1 Now, consider 2 E as one character, so that arranging for four letters =4 ! ways Required probability = 4 ! 5 ! = 1 5