Math Chapter Wise Arithmetic English MCQ OAVS TGT 2022 Q.The value of n i j i 1 j 1 k 1 1 = ∑ ∑ ∑ is: A2 n ∑ Bn/∑ C3 n ∑ D()() n n 1 n 2 6 + + Show answer Correct answer: ()() n n 1 n 2 6 + +