COMEDK · Maths · 7. Binomial Theorem
If \({ }^{10} C_x={ }^{10} C_4\) then the value of \(x\) is
- A 6 only
- B 4 only
- C both 4 and 6
- D 5 and 6
Answer & Solution
Correct Answer
(C) both 4 and 6
Step-by-step Solution
Detailed explanation
\(\begin{array}{ll}\text { } \because{ }^n C_x & ={ }^n C_y(\text { when } x=y \text { or } x+y=n) \\ \Rightarrow & x=4 \text { or } x+4=10 \\ \Rightarrow & x=4 \text { or } x=6\end{array}\)
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