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Q.
There are 15 lines in plane. How many intersections (Maximum) can be made ?
A.
55
B.
105
C.
215
D.
148
View Answer
Correct choice: B
Explanation:
First line will cut all other 14, similarly second will cut 13, and so on Total = 14+13+12+11+10+9+8+7+6+5+4+3+2+1 = 105.
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