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Number of different striaght lines that ...

Number of different striaght lines that cn be formed by joining 12 different points on a plane of which 4 are collinear is

A

16

B

61

C

65

D

37

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The correct Answer is:
B
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AAKASH INSTITUTE-PERMUTATIONS AND COMBINATIONS -Assignment Section A Objective type questions (One option is correct )
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  3. Number of different striaght lines that cn be formed by joining 12 dif...

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  4. A polygon has 90 diagonals , Number of its sides

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  5. Number of triangles that can be formed by joining the 10 non-collinear...

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  6. Number of different words that can be formed from 15 consonants and 5 ...

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  7. A box contains 7 red , 6 white and 4 blue balls. Number of ways of sel...

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  8. In a test paper there are 10 questions . Number of ways in which 6 que...

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  9. How many four digit natural numbers not exceeding the number 4321 can ...

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  10. Number of ways in which the letters of the word MOBILE be arranged so ...

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  12. Number of even numbes greater than 300 that can be formed with the dig...

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  13. There are 6 books of physics , 3 of chemistry and 4 of biology . Numbe...

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  15. Number of ways in which 15 different books can be arraged on a shelf s...

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  16. How many 6 digit numbers can be formed out of the digits of the number...

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  17. Number of ways in which n balls be randomly distributed in n cells is

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  18. Number of three digit numbers such that atleast one of the digits is 9...

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  19. Number of ways in which the letters of the word TAMANNA be arranged is

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  20. Number of three letter words that can be formed using only vowels but ...

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