Question

Which of the following is not an AP ?

1 , 4 , 7 ,10 ,............

-5 , -2 ,1 , 4 ,.........

3 , 7 ,12 , 18 ,............

11 , 14 ,17 , 20..........


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Answer 1

Answer:

3, 7, 12, 18.... is not an A.P because it does not have common difference

Step-by-step explanation:

Hope it helps you out.......

Answer 2

Answer:

ᴀʟʟ ᴀᴘ ʜᴀs ᴀᴅᴅᴇᴅ 3 ᴛᴏ ɢᴇᴛ ɴᴇxᴛ ɴᴜᴍʙᴇʀ ᴇxᴄᴇᴘᴛ ᴛʜɪʀᴅ ᴏɴᴇ , ɪ.ᴇ.; 3 , 7 , 12 , 18 ............

3 , 7 , 12 , 18 , ........... ⁱˢ ⁿᵒᵗ ᵃⁿ ᗩᑭ .