Question

7. Write first four A.P terms if a= 20 b = -5​

Answer 1

Answer:

we know that in an AP nth term is given by:-

an= a+(n-1)d where a is 1st term, d is common difference and n is the term no.

so here a=20 and d=-5

a1= 20

a2=20-5= 15

a3=15-5=10

a4=10-5=5

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