1.D=∣104+2107+3108+8109+9102+8103−4103−5108+b106+a∣D = \begin{vmatrix} 10^4+2 & 10^7+3 & 10^8+8 \\ 10^9+9 & 10^2+8 & 10^3-4 \\ 10^3-5 & 10^8+b & 10^6+a \end{vmatrix}D=104+2109+9103−5107+3102+8108+b108+8103−4106+a where a,ba, ba,b, both ∈{1,2,3,4,5,6,7,8,9}\in \{1,2,3,4,5,6,7,8,9\}∈{1,2,3,4,5,6,7,8,9}.Number of ordered pairs (a,b)(a, b)(a,b) such that D=2n+1,n∈ZD = 2n+1, n \in \mathbb{Z}D=2n+1,n∈Z isa.363636b.202020c.161616d.454545Login to continueOnly logged in users canattempt or see the solution.
