Question

pls give me answer
Class 10 Maths
Chapter 1 Real Number
Exercise 1.2​

Answer 1

Step-by-step explanation:

this is ans for this question

Answer 2

$\huge\sf\mathbb\color{yellow}\underline{\colorbox{black}{ ★᭄ꦿ᭄ꦿ AɴSᴡᴇʀ ★᭄ꦿ᭄ꦿ}}$

$\mathfrak\red{ ǫᴜᴇsᴛɪᴏɴ ⇴ 12, \: 15 \: ᴀɴᴅ \: 21}$

• 12 = 2 ×2×3
• 15 = 3×5
• 21 = 7×3

∴ ʜᴄғ ᴏғ 12,15, ᴀɴᴅ 21 ɪs 3

ʟᴄᴍ ᴏғ 12,15, ᴀɴᴅ 21 ɪs 420

$\mathfrak\red{ ǫᴜᴇsᴛɪᴏɴ ⇴ 17, \: 23 \: ᴀɴᴅ 29}$

• 17 = 1×17
• 23 = 23×1
• 29 = 29 ×1

∴ ʜᴄғ ᴏғ 17,23, ᴀɴᴅ 29 ɪs 1

ʟᴄᴍ ᴏғ 17,23,ᴀɴᴅ 29 ɪs 11339

$\mathfrak\red{ ǫᴜᴇsᴛɪᴏɴ ⇴ 8,9 ᴀɴᴅ \: 25 \: }$

• 8 = 2×2×2
• 9= 3×3
• 25 = 5×5

∴ ʜᴄғ ᴏғ 8,9 ᴀɴᴅ 25 ɪs 1

ʟᴄᴍ ᴏғ 8,9 ᴀɴᴅ 25 ɪs 1800