Question

Common difference of AP is 5. Find a9 – a2.​

Answer 1

Answer:

c d =5

a9-a2

A9=a +8d

so

A9=a+8(5)

A9=a+45

A2=a+d

so

A2=a+5

then

a9-a2=a+45-a+5

cancelling a

then 45+5=50