Page 10 - Grade 10 C.Math

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dfgf}F, v]tLkftL ug]{x¿sf] ;d"x A,

kz' kfng ug]{x¿sf] ;d"x B / Jofkf/ Joj;fo ug]{x¿sf] ;d"x C xf] .

k|Zgfg';f/ o;nfO{ lgDgfg';f/ e]glrqdf k|:t't ug{ ;lsG5 M n(AB)
Curriculum Development Centre
ca, e]glrqcg';f/ A B U

hDdf 3/ kl/jf/ ;ª\Vof n(U) = 140 n(B) = 60
n(A B C) = 7 n(A) = 70 ?

t;y{, n(A  B  C) = n(U) – n(A  B  C)
= 140 – 7
= 133 C
n(C) = 45 n(ABU) = 7

n(A  B  C) = ltg cf]6} Joj;fo ;~rfng ug]{ 3/ kl/jf/sf] ;ª\Vof = ?

xfdLnfO{ yfxf 5,
n(A  B  C) = n(A) + n(B) + n(C) – n(A  B) – n(B  C) – n(C  A) + n(A  B  C)

t;y{, n(A  B  C) = n(A  B  C) – n(A) – n(B) - n(C) + n(A  B) + n(B  C) + n(C  A)
= 133 – 70 – 60 – 45 + 17 + 16 + 18

= 133 – 175 + 51
= 184 – 175
= 9

ctM 9 3/ kl/jf/n] lbOPsf dWo] ltg cf]6} k];f Joj;fo ;~rfng u/]sf /x]5g\ .

pbfx/0f 3

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7 ul0ft, sIff – 10