Page 9 - Grade 10 C.Math

pbfx/0f 1
]
]
}
]
F
]
]
"
\
]
'
;usf eglrqsf cjnfsg u/L lbOPsf ;dxx¿sf u0fgfTds ;ªVof kTtf nufpgxf; M
\
(i) n(P) (ii) n (R) (iii) n (P  Q)
0 0 P Q U
(iv) n(Q - R) (v) n(P  Q  R) 4 2 10
(vi) n(P  Q  R) 18 5 11 12
Curriculum Development Centre
16 3 1 8
;dfwfg 15 6 7 9
oxfF lbOPsf] e]glrqsf] cjnf]sg ubf{, 17 14 13
P = {1, 2, 3, 4, 5, 6, 7, 16, 18| R 19 20
Q = {1, 2, 8, 9, 10, 11, 12}
R = {1, 3, 6, 7, 8, 9, 13, 14}
t;y{
(i) n(P) = 9 x'G5 .

(ii) n (R) = R df dfq kg]{ ;b:ox¿sf] ;ª\Vof = 2
0
(iii) P  Q = {1, 2} n(PQ ) = 2

 n (P  Q) = 2 – 1 = 1
0
(iv) Q - R = {2, 10, 11, 12}
 n(Q - R) = 4

(v) P  Q  R = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18}
 n(P  Q  R) = 16
(vi) U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10,, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}

n() = 20
n(P  Q  R) = n(U) – n(P  Q  R)
= 20 - 16 = 4

pbfx/0f 2

cd{nfsf 140 3/ kl/jf/df ul/Psf] ;j]{If0fdf 70 3/ kl/jf/n] v]tLkftL, 60 3/ kl/jf/n] kz' kfng
/ 45 3/ kl/jf/n] Jofkf/ Joj;fo ;~rfng u/]sf] kfOof] . oL dWo] 17 3/ kl/jf/n] v]tLkftL / kz'
kfng b'j} u/]sf], 16 3/ kl/jf/n] kz' kfng / Jofkf/ Joj;fo ;~rfng u/]sf], 18 3/ kl/jf/n]
v]tLkftL tyf Jofkf/ Joj;fo ;~rfng u/]sf] / 7 3/ kl/jf/n] oL s'g} klg Joj;fo gu/]sf]
atfP . e]glrqsf] lgdf{0f u/L ltg cf]6} Joj;fo ;~rfng ug]{ 3/ kl/jf/sf] ;ª\Vof kTtf

nufpg'xf];\ .

6 ul0ft, sIff – 10