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Byju's Answer
Standard VII
Mathematics
BODMAS
Find the valu...
Question
Find the value of the following:
20
×
21
A
410
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B
420
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C
430
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D
440
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Solution
The correct option is
A
420
20
×
21
=
(
20
+
0
)
(
20
+
1
)
400
+
20
=
420
Hence, Option B is correct.
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