Question

hi guys.....

If the common difference of an ap is 3 then a20 - a15 is equal to ........?​

Answer 1

Answer:15

Step-by-step explanation:a20=a+19d

a15=a+14d

a20-a15=a+19d-(a+14d)=5d

Since d=3

5d=15

5x3=15

Answer 2

Answer:

(a+19d) - (a +14d) = 5d = 15