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Quiz Description :
Name : Number series test – Logical reasoning
Subject : Logical Reasoning
Topic : Series
Questions: 15 Objective
Time Allowed : 20 Minutes
Important for : Govt Competitions like SSC, IBPS, SBI, RBI, Railways, PCS, Job written test ( TCS, WIPRO, IBM, Samsung etc ) and other reasoning competitions.
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 Question 1 of 15
1. Question
1 pointsLook at this series 2,1, (1/2), (1/4)…..what no. Should come next?
CorrectIncorrectExplanation – This is a simple division series each no. Is one half of the previous no.
UnattemptedExplanation – This is a simple division series each no. Is one half of the previous no.
 Question 2 of 15
2. Question
1 pointsLook at this series 53,53,40,40,27,27…..what no. Should come next?
CorrectIncorrectExplanation – In this series each no. Is repeated, then 13 is subtracted to arrive at the next no.
UnattemptedExplanation – In this series each no. Is repeated, then 13 is subtracted to arrive at the next no.
 Question 3 of 15
3. Question
1 pointsLook at this series 3,4,7, 8,11,12….what no. Should come next?
CorrectIncorrectExplanation – The alternating addition series begins with 3, then 1 is added, again 3 is added in the way after 12 it adds 3 so we will get 15.
UnattemptedExplanation – The alternating addition series begins with 3, then 1 is added, again 3 is added in the way after 12 it adds 3 so we will get 15.
 Question 4 of 15
4. Question
1 pointsLook at this series 2,6,18,54,…..what no. Should come next?
CorrectIncorrectExplanation – This is a simple multiplication series, each no. Is 3 times more than the previous no.
UnattemptedExplanation – This is a simple multiplication series, each no. Is 3 times more than the previous no.
 Question 5 of 15
5. Question
1 pointsLook at this series 5.2,4.8,4.4,4….., what no. Should come next?
CorrectIncorrectExplanation – In this simple subtraction series each no. Decreases by 0.4
UnattemptedExplanation – In this simple subtraction series each no. Decreases by 0.4
 Question 6 of 15
6. Question
1 pointsLook at this series F2,….D8, C16,B32 what no. Should fill the blank
CorrectIncorrectExplanation – The letters decreases by 1, and the numbers are multiplied by 2.
UnattemptedExplanation – The letters decreases by 1, and the numbers are multiplied by 2.
 Question 7 of 15
7. Question
1 pointsLook at this series 664,332,340,170,….,89 What no. Should fill the blank
CorrectIncorrectExplanation – This is an alternating division and addition series, first divide by 2 and then add 8.
UnattemptedExplanation – This is an alternating division and addition series, first divide by 2 and then add 8.
 Question 8 of 15
8. Question
1 points120,99,80,63,48,?
CorrectIncorrectExplanation – The pattern is 21, 19, 17, 15,….
So, the missing term 4813 = 35
UnattemptedExplanation – The pattern is 21, 19, 17, 15,….
So, the missing term 4813 = 35
 Question 9 of 15
9. Question
1 points3,10,101, ?
CorrectIncorrectExplanation – Each term in the series is obtained by adding 1 to the square of the preceding term
UnattemptedExplanation – Each term in the series is obtained by adding 1 to the square of the preceding term
 Question 10 of 15
10. Question
1 points125,80,45,20,?
CorrectIncorrectExplanation – The pattern is 45,35,25,…
So, missing term = 2015 = 5
UnattemptedExplanation – The pattern is 45,35,25,…
So, missing term = 2015 = 5
 Question 11 of 15
11. Question
1 points1,3,4,8,15,27,?
CorrectIncorrectExplanation – The sum of 3 consecutive terms of the series gives the next term.
So, the missing no. 8+15+27 = 50.
UnattemptedExplanation – The sum of 3 consecutive terms of the series gives the next term.
So, the missing no. 8+15+27 = 50.
 Question 12 of 15
12. Question
1 points2,3,5,7,11,?,17
CorrectIncorrectExplanation – Clearly, the given series comprises of prime numbers starting from 2 so, the missing term is a prime no. 13 after 11.
UnattemptedExplanation – Clearly, the given series comprises of prime numbers starting from 2 so, the missing term is a prime no. 13 after 11.
 Question 13 of 15
13. Question
1 points2,5,9,?,20,27
CorrectExplanation – the pattern is +3,+4,+5,+6,….
So, missing term is 9+5 = 14
IncorrectExplanation – the pattern is +3,+4,+5,+6,….
So, missing term is 9+5 = 14
UnattemptedExplanation – the pattern is +3,+4,+5,+6,….
So, missing term is 9+5 = 14
 Question 14 of 15
14. Question
1 points9,27, 31,155,161,1127,?
CorrectExplanation – the pattern is ×3,+4,×5,+6,×7,…..
So. The missing term is 1127+8 = 1135
IncorrectExplanation – the pattern is ×3,+4,×5,+6,×7,…..
So. The missing term is 1127+8 = 1135
UnattemptedExplanation – the pattern is ×3,+4,×5,+6,×7,…..
So. The missing term is 1127+8 = 1135
 Question 15 of 15
15. Question
1 pointsWhich of the following will not be a no. Of the series 1,8,27,64,125,…?
CorrectExplanation – The given series consists of cubes of natural numbers only 256 is not the cube of any natural number.
IncorrectExplanation – The given series consists of cubes of natural numbers only 256 is not the cube of any natural number.
UnattemptedExplanation – The given series consists of cubes of natural numbers only 256 is not the cube of any natural number.