Question

find the sum of first 10 terms of the AP 2, 7, 12................​

Answer 1

Answer:

47

Step-by-step explanation:

first term (a) = 2

common difference (d) = 5

So, the tenth term can sought using; t(n) = a+(n-1)d

i.e., t(10) = 2+(10-1)5

=2+9(5) = 2+45 = 47