how many two-digit numbers are divisible by 3?
Answers
Answered by
1
Answer:
Step-by-step explanation:
Attachments:
Answered by
1
sᴏ, ᴛʜᴇ ᴀ.ᴘ. ᴡɪʟʟ ʙᴇ 12, 15, 18, 21, ………….99 ᴡᴇ ɴᴇᴇᴅ ᴛᴏ ғɪɴᴅ ɴ ʟᴀsᴛ ᴛᴇʀᴍ ᴏғ ᴛʜɪs sᴇʀɪᴇs ɪs 99 sᴏ, ᴀɴ = 99 & ᴀ = 12ᴅ = 15 – 12 = 3 ɴᴏᴡ, ᴀɴ = ᴀ + (ɴ – 1) ᴅ ᴘᴜᴛᴛɪɴɢ ᴠᴀʟᴜᴇs 99 = 12 + (ɴ – 1) (3) 99 = 12 + 3ɴ – 3 99 = 9 + 3ɴ 3ɴ = 99 – 9 3ɴ = 90 ɴ = 90/3 = 30 ᴛʜᴇʀᴇғᴏʀᴇ , ᴛʜᴇʀᴇ ᴀʀᴇ 30 ᴛᴡᴏ ᴅɪɢɪᴛ ɴᴜᴍʙᴇʀs ᴅɪᴠɪsɪʙʟᴇ ʙʏ 3.
Similar questions