Question : Directions: Which of the following numbers will replace the question mark (?) in the given series? 7, 7, 5, 15, 11, 55, 49, 343, ?
Option 1: 335
Option 2: 293
Option 3: 194
Option 4: 395
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Correct Answer: 335
Solution : Given: 7, 7, 5, 15, 11, 55, 49, 343, ?
The pattern is as follows – 7 × 1 = 7; 7 – 2 = 5; 5 × 3 = 15; 15 – 4 = 11; 11 × 5 = 55; 55 – 6 = 49; 49 × 7 = 343; 343 – 8 = 335
So, the missing number of the series is 335. Hence, the first option is correct.
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