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Byju's Answer
Standard XII
Physics
Rounding Off
3, 7, 13, 21,...
Question
3
,
7
,
13
,
21
,
31
,
.
.
.
.
.
A
40
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B
41
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C
42
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D
43
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Solution
The correct option is
D
43
Add the numbers
4
,
6
,
8
,
10
,
12
etc Next number is
31
+
12
=
43
Suggest Corrections
0
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