Given numbers: 10 to 250

∴ Multiples of 4 between 10 and 250 are

First term: + ( – ) =

Last term: 250 – =

∴ 12, 16, 20, 24, ….., 248

a = a₁ = ; d = ; a_n =

a_n = a + (n – 1)d

= + (n – 1) ×

⇒ (n – 1) = –

∴ n = + =

There are numbers between 10 and 250 which are divisible by 4.