Text Solution Answer : 7 Solution : There are 10 letters in the word LOGARITHMS. So, the number of 4-letter words is equal to the number of arrangements of 10 letters, taken 4 at a time, i.e., `.^(10)P_(4)=5040`. Hello Aspirants. Welcome to Online Reasoning Section in AffairsCloud.com. Here we are creating question sample in coded Permutations & Combinations, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!
AnswersRelated How many words of 4 letters with or without meaning be made from the letters of the word ‘NUMBER’, when repetition of letters is not allowed?a)480b)24c)240d)360e)None of theseCorrect answer is option 'D'. Can you explain this answer?
NUMBER is 6 letters. We have 4 places where letters are to be placed. For first letter there are 6 choices, since repetition is not allowed, for second, third and fourth letter also we have 5, 4, and 3 choices resp., so total of 6*5*4*3 ways = 360 ways.
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