What should come in place of question Mark ‘?’ in the following number series?
25, ?, 256, 476, 745, 1050

This question was previously asked in
SBI PO Prelims 1 Nov 2023 Memory Based Paper (Shift 1)
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  1. 60
  2. 100
  3. 125
  4. 65
  5. None of these

Answer (Detailed Solution Below)

Option 2 : 100
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Detailed Solution

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100 - 25 = 75,

256 - 100 = 156,

476 - 256 = 220,

745 - 476 = 269,

1050 - 745 = 305

Again taking the difference 

156 - 75 = 81(92)

220 - 156 = 64(82​)

269 - 220 = 49(72​)

305 - 269 = 36(62)

Hence 100 is the correct answer

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