Question

${\huge{\blue{\underline{\underline{ϙᴜᴇsᴛɪᴏɴ♪～}}}}}$

Tʜᴇ ᴍᴇᴀɴ ᴏғ 'ɴ' ɴᴜᴍʙᴇʀs ᴏғ ᴀ sᴇʀɪᴇs ɪs x. Iғ ᴛʜᴇ sᴜᴍ ᴏғ ғɪʀsᴛ (ɴ-1) ᴛᴇʀᴍs ɪs 'ᴋ', ᴛʜᴇɴ ᴛʜᴇ ɴ'ᴛʜ ɴᴜᴍʙᴇʀ ɪs

»»————> ᴡᴀɴᴛ ᴄᴏʀʀᴇᴄᴛ ᴀɴsᴡᴇʀ, ɴᴏ sᴘᴀᴍ , sᴘᴀᴍᴍᴇʀs sᴛᴀʏ ᴀᴡᴀʏ <————««

ᴍɪss ɪᴢᴢᴀᴛᴅᴀʀ♡~
━━━━━━━━━━━━━━━━━━​​

Answer 1

$\Large\bf\red{\underline{\overline{\mid{\orange{Answer:-}}\mid}}}$

• Arithmetic mean is termed as sum of n terms/no. of terms n
• Here No. of terms is given =n

• Mean=x

• So sum of n terms =nx

• Sum of n-1 terms is= k

• Sum of n terms = Sum of n-1 terms +Nth term

• nx= k+ Nth term

$\boxed{\purple{N'th Term = nx-k}}$

Answer 2

$\large \green{ \fcolorbox{gray}{black}{ ☑ \: \textbf{Verified \: answer}}}$

• Arithmetic mean is termed as sum of n terms/no. of terms n
• Here No. of terms is given =n
• Mean=x
• So sum of n terms =nx
• Sum of n-1 terms is= k
• Sum of n terms = Sum of n-1 terms +Nth term
• nx= k+ Nth term