Question

Question : What is the 20th term of the sequence defined by an = (n − 1) (2 – n) (3 + n) ?
Answer : Putting n = 20, we obtain
an = (20 - 1) (2 – 20) (3 + 20)
= 19 × (- 18) X (23) = - 7866 .​

Answer 1

Answer:

computer that was smaller, less expensive, and less powerful than a mainframe or supercomputer but more expensive and more powerful than a personal computer. Minicomputers were used for scientific and engineering computations, business transaction processing, file handling, and database management.

Answer 2

Answer:

Answer: We need to find 20th term i.e. a20 Let an = (n 1) (2 n) (3 + n) putting n = 20 in (1) a20 = (20 1) (2 20) (3 + 20) = (19) ( 18) (23) = 7866. Hence the 20th term is -7866.