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Byju's Answer
Standard XII
Mathematics
Sequence
2, 10, 30, 68...
Question
2, 10, 30, 68, .....
A
130
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B
140
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C
142
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D
138
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Solution
The correct option is
A
130
The pattern is
1
3
+
1
,
2
3
+
2
,
3
3
+
3
,
4
3
+
4
,
.....
∴
M
i
s
s
i
n
g
n
u
m
b
e
r
=
53
+
5
=
130
.
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0
Similar questions
Q.
2 + 10 + 30 + 68 + 130 + ...
Q.
Find the missing number.
2
,
10
,
30
,
68
,
.
.
.
.
.
Q.
68
%
o
f
320
+
30
÷
0.8
=
?
Q.
The value of
(
sin
2
22
o
+
sin
2
68
o
+
cot
2
30
o
)
is
Q.
Mark true or false.
(a) (100 + 10) + 5 = 100 + (10 + 5) ____
(b) 100 − (10 − 5) = (100 − 10) − 5 ____
(c) (72 − 36) − 20 = 72 − (36 − 20) ____
(d) (68 × 4) × 20 = 68 × (4 × 20) ____
(e) 7(6 − 3) = 7 × 6 − 7 × 3 ____
(f) 20 × 30 = 30 × 20 ____
(g) 87 − 41 = 41 − 87 ____
(h) 16 × 4 = 4 × 16 ____
(i) 480 + 0 = 0 + 480 ____
(j) (16 + 7) + 3 = 16 + (7 + 3) ____
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