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Permutations and Combinations - Data Intensity 1 Multiple Questions and Answers.
| 16. | Using all the letters of the word “THURSDAY”, how many different words can be formed? | ||
| A. | 8 | ||
| B. | 8! | ||
| C. | 7! | ||
| D. | 7 | ||
| 17. | How many three letter words are formed using the letters of the word TIME? | ||
| A. | 12 | ||
| B. | 20 | ||
| C. | 16 | ||
| D. | 24 | ||
| 18. | A boy has nine trousers and 12 shirts. In how many different ways can he select a trouser and a shirt? | ||
| A. | 21 | ||
| B. | 12 | ||
| C. | 9 | ||
| D. | 108 | ||
| 19. | There are 30 people in a group. If all shake hands with one another , how many handshakes are possible? | ||
| A. | 870 | ||
| B. | 435 | ||
| C. | 30! | ||
| D. | 29! + 1 | ||
| 20. | In how many different ways can the letters of the word ‘OPTICAL’ be arranged so that the vowels always come together? | ||
| A. | 120 | ||
| B. | 720 | ||
| C. | 4320 | ||
| D. | 2160 | ||
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