Question

Sum of the first 5 term of an arithematic sequence is 45 what is the third term

Answer 1

Answer:

9

Step-by-step explanation:

first term in an arithmetic progression= a

second term= a+d, third term = a+2d and so on..

sum of first 5 terms:

a+a+d+a+2d+a+3d+a+4d= 45

5a+10d=45

dividing both sides by 5

a+2d =9

third term= 9 (as a+2d is 3rd term)

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