A) \[^{18}{{C}_{3}}\]
B) \[^{18}{{C}_{4}}\]
C) \[^{14}{{C}_{7}}\]
D) None of these
Correct Answer: B
Solution :
\[^{14}{{C}_{4}}{{+}^{14}}{{C}_{3}}{{+}^{15}}{{C}_{3}}{{+}^{16}}{{C}_{3}}{{+}^{17}}{{C}_{3}}{{=}^{18}}{{C}_{4}}\].
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