How many terms of the series 1+ 5+9+...........must be taken so that t

1.	How many terms of the series 1+ 5+9+...........must be taken so that theirs sum is 120
Answer» Answer: Bhai ap KA formula a+(n-1)d a=1 difference=4 Step-by-step explanation: answer aa jayega MERA kaam h raasta dhikana Manzil PR pahuchna tumhara kaam h agar lines achi lagi to pls MARK me as brainliest

How many terms of the series 1+ 5+9+...........must be taken so that theirs sum is 120

Answer»

Answer:

Bhai ap KA formula a+(n-1)d

a=1

difference=4

Step-by-step explanation:

answer aa jayega MERA kaam h raasta dhikana Manzil PR pahuchna tumhara kaam h agar lines achi lagi to

pls MARK me as brainliest