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Quantitative Aptitude-Number Series(Difference of Difference)-For Bank/Insurance

Quantitative Aptitude-Number Series(Difference of Difference)-For Bank/Insurance

Dear Readers, Number Series Questions was given here. Aspirants those who are preparing for the competitive examination can use this.
Quantitative Aptitude-Practice set -Number Series- Set 19

Directions (1-10) What should come in place of the question mark (?) in the following number series ?
1)5,9,33,72,121,?
A)169
B)175
C)171
D)184
E)None
2)7.5,9.5,15.5,27.5,47.5, ?
A)80
B)95.5
C)93.5
D)77.5
E)None
3)17,28,42,65,115.?
A)146
B)181
C)246
D)301
E)None
4)8,14,25,46,82,?
A)132
B)130
C)138
D)168
E)None
5)5,7,18,47,103,?
A)195
B)210
C)200
D)190
E)None
6)4,9,20,43,84,?
A)149
B)240
C)140
D)201
E)None
7)4,11,24,44,72,?
A)121
B)113
C)109
D)118
E)None
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1.B-175)
5+(4)=9 ,9+(24)=33,33+(39)=72,72+(49)=121,121 +(54)=175
(4)+20=(24)/(24)+15=(39)/(39)+10=49
2.D-77.5)
7.5+2=9.5/9.5+6=15.5/15.5+12=27.5/27.5+20=47.5/47.5+30=77.5
Sq of 1+1=2 /sq of 2+2=4/sq of 3+3=12/……….
3.C-246 )
17+11=28/28+14=42/42+23=65/65+50=115/115+131=246
11+3=14/14+9=23/23+27=50/50+81=131
4.C-138)
8+6=14/14+11=25/25+21=46/46+36=82/82+56=138
6=+(5)=11/11+(10)=21/21+(15)=36/36+(20)=56
5.A-195)
5+2=7/7+11=18/18+29=47/47+56=103/103+92=195
2+(9)=18/11+(18)=29/29+(27)/56+36=92
6.A-149)
+5/+11/+23/+41/+65
5+(6)=11/11+(12)=23/23+(18)=41/41+(24)=65
7.C-109)
+7/+13/+20/+28/+37
7+(6)=13/13+(7)=20/20+(8)=28/28+(9)=37
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