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Byju's Answer
Standard XII
Mathematics
Permutation: n Different Things Taken r at a Time
2, 3, 3, 5, 1...
Question
2, 3, 3, 5, 10, 13, ?, 43, 172, 177
A
23
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B
38
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C
39
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D
40
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Solution
The correct option is
C
39
The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.
So, missing term = 13 x 3 = 39.
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Similar questions
Q.
Identify the term that will replace the ?
2, 3, 3, 5, 10, 13, ?, 43, 172, 177
Q.
Question 43
2__
5
3
=
10
3
Q.
Solve the following equations.
(1) 17p − 2 = 49
(2) 2m + 7 = 9
(3) 3x + 12 = 2x − 4
(4) 5(x − 3) = 3(x + 2)
(5)
9
x
8
+ 1 = 10
(6)
y
7
+
y
-
4
3
= 2
(7) 13x − 5 =
3
2
(8) 3(y + 8) = 10(y − 4) + 8
(9)
x
-
9
x
-
5
=
5
7
(10)
y
-
4
3
+ 3y = 4
(11)
b
+
(
b
+
1
)
+
(
b
+
2
)
4
= 21
Q.
(
1
3
+
2
3
+
3
3
+
4
3
)
−
3
/
2
=
Q.
Evaluate:-
(
1
3
+
2
3
+
3
3
+
4
3
)
−
3
2
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Permutation: n Different Things Taken r at a Time
Standard XII Mathematics
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