Question

Are 205 and 305 a term in the sequence 1,6,11,16....

Answer 1

Answer:

NO, never 205 and 305 is part of this sequence.

Step-by-step explanation:

HEY, there are two ways to solve,

first by using formula {A+(N-1)D}=Nth term

and the second way is a TRICK

SEE, it is clear that the common difference is 5, so  any number would be part of this sequence if it leaves 1 as remainder when dived by 5.

SEE, 1÷ 5 gives remainder 1, similarly 6 ÷5 gives remainder 1.

BUT 205 and 305 are multiples of five so they can never be part of this sequence.

HOPE IT HELPS and if you like it mark it as BRAINLIEST.