A) 44
B) 45
C) 46
D) 40
Correct Answer: D
Solution :
Number of lines\[{{=}^{10}}{{C}_{2}}{{-}^{4}}{{C}_{2}}+1\] \[=\frac{10.9}{2.1}-\frac{4.3}{2.1}+1\] \[=45-6+1=40\]
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