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Number series | Maths


A set of numbers arranged in a definite order according to some definite rule

Questions
1. 2, 3, 5, 8, 12, ___
(Process Server - Judicial 2018)
Answer : 17
Here difference between terms increase by 1,2,3 etc. 3-2=1 , 5-3=2, 8-5=3 ... 

 2.What is the next number of the series 3, 7, 19, 55, .......
(Women Civil Excise Officer 2018)
Answer : 163 
Here difference between terms increase by 4,12,36 ( multiply by 3 that is 4*3= 12, 12*3= 36 ) 

 3.ഈ ശ്രേണിയിലെ അടുത്ത സംഖ്യ ഏത് ? 1, 8, 27, 64, ______
(STORE KEEPER-KSFDC 2018)
Answer : 125
Here 1³, 2³, 3³....

 4.Find the next term of the sequence 1/2 , 2/5 , 3/10 , 4/17 , ______________
(Caretaker Male 2018)
Answer : 5/26
Here 1/1²+1, 2/2²+1 .....

 5.0, 3, 10, 21, ____ ഈ ശ്രേണിയിൽ വിട്ടഭാഗത്തെ സംഖ്യയേത്?
(LGS 2018)
Answer : 36
Here difference between terms is 3, 7, 11 (Whose difference is 4 that is 7-3=4,11-7=4 etc)

 6.15, 20, 26,33,41,....... എന്ന ശ്രേണിയിലെ അടുത്ത സംഖ്യ ഏതായിരിക്കും?
(WOMEN POLICE CONSTABLE NCA 2018) 
Answer : 50
Here difference between terms increase by 5,6,7 etc. 20-15=5 , 26-20=6, 33-26=7 ... 

 7.225, 196, _______, 144, 121. വിട്ട സംഖ്യ ഏത് ?
(AYAH 2018)
Answer : 169 
Here 5²,4²,3²....

 8.0,2,6,12,____ അടുത്തതേത്
(Gardener Gr III 2018)
Answer : 20
Here difference between terms is 2,4,6,8...

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