# Logical Reasoning Questions And Answers :: Number Series: part1

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Logical Reasoning Ability Test : Number Series QUESTIONS AND ANSWERS :: part1 : 1 to 5

 1. 4, 7, 12, �.., 28, 39 19 24 14 16 None of these ANSWER : 19 Explanation : . Series proceeds with a difference of 3, 5, 7, 9, 11, respectively. Hence, the missing number will be 19.
 2. 8, 4, 12, 6, 18, ���.., 27 10 12 18 24 None of these ANSWER : None of these Explanation : . 3rd, 5th and 7th numbers are the sums of preceding two numbers. Hence, the missing number is 9 as 18 + 9 = 27.
 3. 45, 54, 47, ��., 49, 56, 51, 57, 53 48 55 50 53 None of these ANSWER : 55 Explanation : . There are two alternate series in the single series, one of them moves with a difference of one number starting with 45, and another is a consecutive series starting with 54. Hence, the missing number will be 55
 4. 2, 6, 12, 20, �.., 42, 56, 72, 90 20 21 30 12 23 ANSWER : 30 Explanation : . Series moves with the increasing difference by 2 i.e., 4, 6, 8, 10, 12�.. Therefore, the missing number will be 30.
 5. 2, 9, 23, 3, 8, 25, 4, ��, 27 7 29 23 14 20 ANSWER : 7 Explanation : . There are three alternative series 2, 3, 4 �� (consecutive numbers), 9, 8, 7 �. (consecutive number in descending order), and 23, 25, 27, � Hence, 7 will come in place of the missing number.

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