# For all numbers s and t, the operation * is defined by S * T = (S - 1)(T + 1), if (-2)* x = -12 then x =

A. 2

B. 3

C. 5

D. 6

E. 11

Related Questions on Quantitative MCQs paper 2

**Consider the sequence 1, 2, 3, 1, 2, 3, 1, 2, 3,…….. What is the sum of the first 100 terms?**

A. 100

B. 180

C. 198

D. 199

E. 200

A. 102

B. 103

C. 199

D. 201

E. 202