Question
A letter is randomly selected from the word
"DETACHMENT." What is the probability that the selected letter is a vowel?Solution
Total number of letters = 10 Number of vowels = 3 So, required probability = (3/10)
More Permutation and combination Questions
3,   2,   3,  8,  31,  ?
56. 23Â Â Â Â Â 45Â Â Â Â Â 89Â Â Â Â Â 177Â Â Â Â Â 363Â Â Â Â Â 705
...22Â Â Â Â Â Â Â Â Â Â 62Â Â Â Â Â Â Â Â Â Â 178Â Â Â Â Â Â Â Â 522Â Â Â Â Â Â Â Â 1550Â Â Â Â Â Â ?
...77 ? 190 257 331 412
...2, 12, 90, 240, ?, 1260
41 48 89 137 226 ?
...43 36 50 29 ? 22
...5 14 56 220 1125 6786
...7 29 ? 129 211 349
19 8 ? -14 63 - 36
...
