Question

The sum of 2,7,12,,,,,to 10 terms
(1)235
(2)245
(3)240
(4)145​

Answer 1

Answer:

followe me

Step-by-step explanation:

245 is answer

Answer 2

Answer:

245

Step-by-step explanation:

2,7,12,...to10 terms

we know that

sum of AP=n/2(29+(n-1)d)

here n=10,a=12

and d=7-2=2

putting these formula

sum=n/2(2a+(n-1)d)

=10/2(2×2+(10-1)×5)

=5(3+9×5)

=5(4+45)

=5(49)

=245