AP EAMCET · Maths · Probability
If the letters of the word REGULATIONS be arranged in such a way that relative positions of the letters of the word GULATIONS remain the same then the probability that there are exactly letters between and is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
The totals letters in the word REGULATIONS are 11. There are 11 places corresponding to 11 letters and in these 11 places R and E can be arranged in P211 ways. Now, Total possible cases where only 4 letters are between R and E are 6 as…
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