Find the missing term(s) in the following series.

45, 33, 23, ?, 9, 5, 3
A 15
B 14
C 16
D 13

• 45-12=33
  33-10=23
  23-8=15
  15-6=9
  9-4=5
  5-2=3
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• A)
  15
  3+2=5
  5+4=9
  9+6=15
  15+8=23
  23+10=33
  33+12=45
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• 15
  differences bw nos is even no
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• A.15 COME FROM LAST ONWARDS ADD EVEN NUMBERS
  3+2=5
  5+4=9
  9+6=15
  15+8=23
  23+10=33
  33+12=44
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• 5-3=2
  9-5=4
  15-9=6
  23-15=8
  33-23=10
  45-33=12
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• B 15 because the difference between numbers are equal odd numbers
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• And:A
  45-32=12
  33-23=10
  23-15=8
  9-5=4
  5-3=2
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• 3+2=5
  5+4=9
  9+6=15
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• 8
  45-33=12
  33-23=10
  23-15=8
  15-9=6
  9-5=4
  5-3=2
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