wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

What is the sum of the first 30 odd numbers?


A

900

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

875

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

870

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

920

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

The correct option is A

900


Every term is of the form 2n + 1, i.e. the sequence is 1,3,5,…

First term, a = 1

Common difference, d = 2
Then the 30th odd term will be:

T30=a+(n1)d=1+(301)2=59

Sum of n terms=n2(a+l) , where l=T30

Sum of n terms=302(1+59)

Sum to 30 terms=15×60=900


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Arithmetic Progression
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon