give me the answer fast i will mark u brilliant. with full explanation
Attachments:
Answers
Answered by
0
Answer:
There are 20 odd numbers
Answered by
0
Answer:
there are 20 odd no. between 1 to 40
Step-by-step explanation:
sum of series 1,3,5,7,.....39 is 400
Sn=n/2{2a+(n-1) d}
=20/2{2x1+(20-1)2}
=10{2+38}
=10x40
=400
hope you like ☺
Similar questions