Substituting this
a = 12 - 6x
4 4
T18 a + 12d
Hence,
T
a +3d
6
7
+ 12 x
4
4
6 7
+ 3 x
4
4
6 +84 90 10
6+21273
EXERCISE A
Very Short Answer Type Questions
1. Find out the nth and 12th terms of the series 9, 7, 5, 3,
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Answer:
Substitution reaction, any of a class of chemical reactions in which an atom, ion, or group of atoms or ions in a molecule is replaced by another atom, ion, or group.
Step-by-step explanation:
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