Question

Find the general formulae for the sequence -6,0,6,12,...... hence find the 200 term

Answer 1

so general formula is

an =a+( n-1)d

now

in this question

a =-6

d =6

n=200

so an=a+(n-1)d

a200= -6+199×6

=1188

so200term = 118i