Question

find the number of terms in each of the following APs (1). 7 ,13,19,205​

Answer 1

Answer:

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Step-by-step explanation:

here is your answer in the attachment

Answer 2

Step-by-step explanation:

A.P 7,13,19,...205

a=7

d= 13-7=6

An= 205

As we know,

An=a+(n-1)d

205=7+(n-1)d

=205-7 =(n-1)6

198=(n-1)6

n-1= 198/6

n-1=33

n=33+1

n=34.

thus total no. of terms is 34.