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surbhi pareek Grade: 12
        

1.no of words of 4 letters that can b formed with the letter of the word IITJEE.


 


2. 4 points out of 8 points are collinear, thn no. of quadilaterals cn b formed by thm? 

6 years ago

Answers : (2)

lits goyal
31 Points
										

1-78


make diff. cases

6 years ago
avinaash v a
29 Points
										

Qno1


    iitjee has six letters hence each of the four letters can be in 6! ways


    hence no of words formed is 4*6! words


Qno2


   no of quadrilaterals formed from 8 points is 8c4


    4 of which are collinear no quadrilaterals are formed


   hence no of quad formed is 8c4-4c4

6 years ago
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