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Byju's Answer
Standard X
Mathematics
Formula for Sum of n Terms of an AP
Multiply 10...
Question
Multiply
10001
by
99
using vedic mathematics.
A
990009
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B
990999
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C
909999
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D
None of these
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Solution
The correct option is
A
None of these
10001 × 99 = 10001 (100 - 1)
= 1000100 - 10001
= 990099
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