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In how ways can the selection be made so that a particular member is always included?
How many different nine digit numbers can be formed from the number 66 55 99 222 by rearranging its digits so that the odd digits occupy even positions...
History books are always together and also Geography books are always together?
In how many different ways can the letter of the word CHESTNUT is arranged so that vowels always occur together?
In how many ways can 2 girls and 8 boys be seated in a row so that girls are always together?
In how many different ways can the letters of the word ‘CURIOES’ be arranged in such a way that the vowels occupy only the odd positions?
In a bag there are 4 red balls, 3 green balls, and 5 blue balls. If one ball is drawn at random from the bag, what is the probability of drawing a green...
How many different words can be formed with the letters of the word PRACTICE such that each of the word begin with E and ends with R?
Find the number of words that can be formed by using all letters of the word 'LAPTOP', if order of vowels remains same.
In how many different ways can the letters of the word “DISCHARGE” be arranged in such a way that the vowels always come together?