Question

The first term and common difference of an AP is 5 and 10 respectively. Find S10.​

Answer 1

Step-by-step explanation:

.....................

Answer 2

Answer:

500

Step-by-step explanation:

a=5

d=10

n=10

S10= n/2 [ 2a+(n-1)d]

=10/2 [2×5 + 9×10]

= 5(10+90)

=5×100

=500

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