A) \[^{56}{{C}_{4}}\]
B) \[^{56}{{C}_{3}}\]
C) \[^{55}{{C}_{3}}\]
D) \[^{55}{{C}_{4}}\]
Correct Answer: A
Solution :
Now, \[{{=}^{54}}{{C}_{4}}\,{{+}^{54}}{{C}_{3}}\,{{+}^{55}}{{C}_{3}}\]You need to login to perform this action.
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