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What should come in place of the question mark '?' in the following number series?

99, 122, 142, 171, 193, ?


1. 222
2. 226
3. 228
4. 203
5. 225

1 Answer

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Best answer
Correct Answer - Option 3 : 228

Calculation:

⇒ 10 × 10 - 1 = 99

⇒ 11 × 11 + 1 = 122

⇒ 12 × 12 - 2 = 142

⇒ 13 × 13 + 2 = 171

⇒ 14 × 14 - 3 = 193

⇒ 15 × 15 + 3 = 228

∴ The missing number is 228.

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