AP EAMCET · Maths · Permutation Combination
The value of is ______.
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Formula for Prn=n!n-r! P46+4.P36=6!2!+4×6!3! =6×5×4×3×2×12×1+4×6×5×4×3×2×13×2×1 =360+4×120=360+480 =840
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