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The sum of the finite series 1 + 3 + 5 + 7 is:
A12
B14
C18
D16
Answer & Solution
Correct answer: D. 16
1. Add the four terms together.
2. One and three make four, plus five is nine.
3. Nine plus seven gives 16.
_Source: NCERT Class 11 Mathematics, Ch 8 'Sequences and Series'_
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