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The International Union for Conservation of Nature (IUCN) is headquartered in Gland, Switzerland. IUCN is an international organization dedicated to natural resource conservation and sustainable use, best known for its Red List of Threatened Species which assesses the conservation status of species globally.
Find the number of words that can be formed by using all letters of the word 'TANGLE', if it starts with letter G and end with letter A.
In a group of 5 boys and 4 girls, 5 students have to be selected. In how many ways it can be done so that only 2 boys are included.
How many five digit numbers can be formed using the digits 0, 1, 2, 3, 4 and 5 which are divisible by 5, without repeating the digits?
Among a set of 6 black balls and 3 white balls, how many selections of 5 balls can be made such that at least 3 of them are black balls?
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?
7 children are to be selected from a group of 8 boys and 6 girls. In how many ways will the children with at most 3 girls and at least 4 boys be selected?
In how many ways can the letters of the word ‘MEDICAL’ be rearranged so that the vowels never come together?