Question : Directions: Select the number that can replace the question mark (?) in the following series. 1, 1, 2, 3, 7, 22, ?
Option 1: 157
Option 2: 156
Option 3: 155
Option 4: 152
Correct Answer: 155
Solution : Given: 1, 1, 2, 3, 7, 22, ?
Multiply the first two terms and then add 1 to obtain the third term and follow the same pattern for the next term. (1 × 1) + 1 = 2; (1 × 2) + 1 = 3; (2 × 3) + 1 = 7; (3 × 7) + 1 = 22; (7 × 22) + 1 = 155
So, 155 is the required term in the given series. Hence, the third option is correct.
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Question : Directions: In the following question a series is given, with one number missing. Select the missing number from the given series. 2, 3, 7, 22, 155, ?
Question : Directions: Select the number that can replace the question mark (?) in the following series. 3, 12, 36, 80, ?, 248
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Question : Directions: Select the number that can replace the question mark (?) in the following series. 15, 18, 13, 20, 11, ?
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