Criteria Cognitive Aptitude (CCAT) Practice Test

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Prepare for the Criteria Cognitive Aptitude Test. Enhance your skills with interactive flashcards and challenging multiple-choice questions. Each question comes with detailed hints and explanations to help you excel and build confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What would be the next number in the series: 1 ... 3 ... 7 ... 15 ... 31 ... ?

The correct answer is: 63

To determine the next number in the series 1, 3, 7, 15, 31, we first need to analyze the pattern in the sequence. Observing the series, we can notice the relationship between consecutive terms. Each number seems to be generated by multiplying the previous number by 2 and then adding 1. Here is the breakdown: - Starting with 1: $1 \times 2 + 1 = 3$ - For 3: $3 \times 2 + 1 = 7$ - For 7: $7 \times 2 + 1 = 15$ - For 15: $15 \times 2 + 1 = 31$ - Finally, for 31: $31 \times 2 + 1 = 63$ Thus, the next number in the series should be 63, following the established pattern of doubling the previous term and adding one. This confirms that the choice of 63 is indeed the correct continuation of the sequence.