Math, asked by gaggubhullar929, 4 months ago

. ਜੇਕਰ X , X+3 ,X+6 , X+9 ਅਤੇ X+12 ਦਾ ਅੰਕਗਣਿਤਕ ਮੱਧਮਾਨ 10 ਹੈ ਤਾਂ X ਦਾ ਮੁੱਲ ਪਤਾ ਕਰੋ।The arithmetic mean of X , X+3 ,X+6 , X+9 and X+12 is 10 than find x.यदि X , X+3 ,X+6 , X+9 और X+12 का अंकगणितीय मध्यमान 10 है तो X पता करो *

a) 1

b) 2

c) 6

d) 4

Answers

Answered by mysticd
1

 Given \: data \: x , (x+3), (x+6) , (x+9) \\and (x+12)

 i) Sum \: of \: the \:terms \\ = x + (x+3) + (x+6)+(x+9) + (x+12) \\= x + x + 3 + x+6+x+9+x+12 \\= 5x + 30 \\= 5(x+6)

ii) Number \: of \: terms = 5

 \red{ Mean = 10 } \: ( given )

 \implies \frac{ Sum \: of \: the \: terms }{ Number \: of \: terms } = 10

 \implies \frac{5(x+6)}{5} = 10

 \implies x + 6 = 10

 \implies x  = 10 - 6

 \implies x  = 4

Therefore.,

 \red{ Value \: of \: x } \green { = 4 }

 Option \: \blue{ ( d ) } \: is \: correct

•••♪

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