Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series.
333, 321, 328, 328, 323, 335, ?
Option 1: 316
Option 2: 322
Option 3: 318
Option 4: 325
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Correct Answer: 318
Solution :
Given:
333, 321, 328, 328, 323, 335, ?
Subtract 5 and add 7 alternatively to each term to get the next alternate term in the series –
333 – 5 = 328; 321 + 7 = 328; 328 – 5 = 323; 328 + 7 = 335; 323 – 5 = 318
Therefore, 318 is the missing number of the series. Hence, the third option is correct.
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