Direction : What value should come in place of the question mark (?) in the series given below ?

128, 61, Y, 64, 63, S, 32, 65, N, 16, 67, J, 8, 69, G, ?, ?, ? : 

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NIELIT Scientific Assistant CS 5 Dec 2021 Official Paper
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  1. 2, 70, J 
  2. 3, 70, E  
  3. 4, 70, E
  4. 4, 71, E

Answer (Detailed Solution Below)

Option 4 : 4, 71, E
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Detailed Solution

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Given: Series:

The series consists of three interleaved patterns:

Pattern 1: Numbers decreasing by half: 128, 64, 32, 16, 8, ?

Pattern 2: Numbers increasing by 2: 61, 63, 65, 67, 69, ?

Pattern 3: Letters in reverse alphabetical order with decreasing gaps: Y, S, N, J, G, ?

qImage67ea278eb44089d38f217c6b

Thus, '4 71 E' is the missing term.

Hence, the correct answer is "Option 4".

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