If λ is a non real cube root of -2, then the value of ∣∣ ∣∣12λ1λ13λ222λ1∣∣ ∣∣ is equal to
If A=∣∣ ∣∣2λ−3025113∣∣ ∣∣, then A−1 exists, if
(a) λ=2 (b) λ≠2 (c) λ≠−2 (d) None of these