What is the missing number in the series 459 440 402 383?
- 432
- 421
- 387
- 362
Explanation
Given series: 459, 440, ?, 402, 383
Difference between terms:
459 - 440 = 19
402 - 383 = 19
Assuming constant difference of 19:
? = 440 - 19 = 421
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