JEE Main 20203 Sep, Morning shiftMathematicsEasyPermutations and Combinations98× since 2002
The value of (2.¹P₀
– 3.²P₁ + 4.³P₂ .... up to
51^th term)
+ (1! – 2! + 3! – ..... up to 51^th term)
is equal to :
JEE Main 2020 · 3 Sep, Morning shift · Q4847