11. |
In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women? |
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12. |
In how many different ways can the letters of the word 'MATHEMATICS' be arranged so that the vowels always come together? |
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13. |
How many 4-letter words with or without meaning, can be formed out of the letters of the word, 'LOGARITHMS', if repetition of letters is not allowed? |
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14. |
In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together? |
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