Number Series

Do as Directed In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. Q 1.20, 19, 17, ? , 10 A)15 B)14 C)13 D)12 Answer : Option B Explanation: The Pattern is - 1, - 2,-3.. .'. Missing number = 17 - 3 = 14. Q 2.2, 3, 5, 7, 11, x A)12 B)14 C)13 D)15 Answer : Option C Explanation: Clearly, the given series consists of prime numbers starting from 2. The prime number after 11 is 13. So, 13 is the missing number. Q 3.1, 6, 13, 22, 33,___? A)44 B)45 C)42 D)46 Answer : Option D Explanation: The pattern is + 5, + 7, + 9, + 11,... .'. Missing number = 33 + 13 = 46. Q 4.6, 11, 21, ___, 56,? A)36 B)34 C)32 D)37 Answer : Option A Explanation: The pattern is + 5, + 10, + 15,+20,+.... .'. Missing Number = 21 + 15 = 36

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