don't spam if spam report yoy to main office.
Share
don't spam if spam report yoy to main office.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
sum = n/2 [2a+(n-1)d]
= 10/2×2×1/15+9/60
= 2/3+3/20
= 40+6/60
= 46/60