11 mathematics permutation and combinations test 05 answer 98u4
TRANSCRIPT
-
8/11/2019 11 Mathematics Permutation and Combinations Test 05 Answer 98u4
1/4
Material downloaded from http://myCBSEguide.comand http://onlineteachers.co.in
Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks
( )
11
n n n
r r rC C C
+
+ =
10 10 10 1
7 6 7C C C
+
+ =
11
7
11
11 7 7C= =
11.10.911
4 7= =
3.82
. 7
4 .3 .2 .1. 7330=
nr
C
9 8 7 504 =
2 1. 2 2. 2 3. 2 4. 2 5. 2 6
[ ]62 1.2.3.4.5.6= 62 6=
5. A 5 A..... 3 ..
. = 8
A 5 = 5
A 3 = 3 A = 2
5 3 2=
5.4.3.2.1 3.2.1 2.1 1440= =
. = 25
. = 10
3 .
7 (253 = 22) 227
C
H T U
7 8 9
-
8/11/2019 11 Mathematics Permutation and Combinations Test 05 Answer 98u4
2/4
Material downloaded from http://myCBSEguide.comand http://onlineteachers.co.in
Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks
A 3 10 22
10C
. 22 22
7 10C C= + 22 22
15 7 12 10= + 817190=
. = 6
. = 5
. = 5
. = 3
. = 6 5 53 3 3
C C C
6 5 5
3 3 2 3 2 3=
6=
.5.4. 3
3.3.2
25.4 . 3
.1 2.1
25. 4. 3
. 3
2.1. 3
5 4 5 2 5 2
20 10 10 2000
=
= =
3 3 .
5 . 4. 3 3 5 4= 60=
r r 1
P Pn n
+=
1
n n
n r n r =
( )
1 1
1 1n r n r n r =
( )1......n r i= =
A
1
n n
r rC C
=
1 1
n n
n r r n r r =
+
1 1
1r n r =
+
( )1 2 1......n r r n r ii + = =
. ( )i ( )ii
3, 2n r= =
-
8/11/2019 11 Mathematics Permutation and Combinations Test 05 Answer 98u4
3/4
-
8/11/2019 11 Mathematics Permutation and Combinations Test 05 Answer 98u4
4/4
Material downloaded from http://myCBSEguide.comand http://onlineteachers.co.in
Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks
() ?
. A 5 A, , , ,
5
8 2
. 8
2=
. 8
5 24192002
= =
4 . A
4
2 10
102
7 4 A
. =10
2 72
= 2 540100
P E R M U T A T I O N S
12
3
4
5
6
7