Find the common difference, if $a_{n} = 20, a = 5$ and $n = 5$

3.8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3.75

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

3.5

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3.15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B 3.75
$a_{n} = a + (n - 1) d$
$20 = 5 + (5 - 1) d$
$20 = 5 + 4 d$
$20 - 5 = 4 d$
$15 = 4 d$
$d = 3.75$

Suggest Corrections

Similar questions

If an= 5-11n,then find the common difference

a_{5} = 5 - 11 n

n^{t h}

Join BYJU'S Learning Program