CAT
Exam
Numerical Ability
Probability
4 points out of 8 points are collinear . Number of different quadrilaterals that can be formed by joining this is
1. 56 2. 53 3. 76 4. 60
Read Solution (Total 4)
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- Number of different quadrilaterals that can be formed by joining this is 53.
- 11 years agoHelpfull: Yes(2) No(2)
- how garima??
- 11 years agoHelpfull: Yes(0) No(0)
- Please Explai the answer guysss......
- 9 years agoHelpfull: Yes(0) No(0)
- the total number of ways if none of them are co-linear is 8c4=70
out of those a quad cannot be formed if we take -----:
(i) 3 dots which are co linear i.e-----4c3*4c1=16
(ii) all the 4 co linear dots i.e------4c4=1
hence the answer is 70-16-1=53 - 7 years agoHelpfull: Yes(0) No(0)
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