Important Number Series Set 3 for Bank
প্রিয় পাঠক, ব্যাঙ্কিং পরীক্ষার উপযোগী নম্বর সিরিজ ম্যাথ(Important Number Series Set 3)কত সহজে নির্ণয় করা যেতে পারে তার কিছু গুরুত্বপূর্ণ ট্রিকস এখানে দেওয়া হলো।
Directions (1-10) What will come in place of question mark (?) in the given number series?
1)2,4,10,?,82,244
A)30
B)48
C)28
D)46
E)34
2)33,16.5,?,24.75,49.5,123.75
A)16.5
B)13.5
C)22.5
D)20.5
E)12.5
3)20,23,30,43,64,?
A)85
B)92
C)95
D)99
E)88
4)44,?,99,148.5,222.75,334.125
A)72
B)77
C)66
D)54
E)84
5)7,8,13,-3,22,?
A)-7
B)-10
C)-12
D)-14
E)-9
6)124,215,342,511,?,999
A)695
B)625
C)728
D)806
E)573
7)516,256,126,61,28.5,?
A)12.25
B)16.75
C)14.25
D)20.20
E)18.75
8)7,21,50,109,?,467
A)198
B)228
C)372
D)402
E)275
9)18,82,118,134,138,?
A)132
B)198
C)125
D)138
E)92
10)5,22,103,406,?,2422
A)1516
B)1298
C)1136
D)1602
E)1213
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EXPLANATIONS :
1.C) The series is (x3-2), (3-2) ,……..
So, the answer is 28
2.A) The series is x5 , x1 , x1.5 , ….
So, the answer is 16.5
3.C) + 3, + 7, +13, +21, + 31
+4 +6 +8 +10
So, the answer is 95
4.C) The series is (x1.5), (1.5, …….)
So, the answer is 66
5.D) The series is +12 , – 22 , ……….
So, the answer is 14
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6.C) The series is (cube of number -1)
53 – 1 = 124, 63-1= 215, …..
So, the answer is 728
7.A) The series is (516-4 ÷2)=256, (256-4 ÷2)=126, …….
So, the answer is 12.25
8.B) The series is (x2 + 7), (x2 +8) ,…….
So, the answer is 228
9.D) The series is + square of number
+ 82, + 62, …………..
So, the answer is 138
10.E) The series is
(6-8),(x5-7),(x4-6)……………..
So, the answer is 1213
Directions (11-20) What will come in place of question mark (?) in the given number series?
11)3,5,13,49,241,?
A)1430
B)1348
C)1228
D)1441
E)1334
12)7,13,31,85,247,?
A)365
B)335
C)733
D)285
E)295
13)5,7,17,47,115,?
A)285
B)245
C)195
D)299
E)88
14)508,256,130,67,35.5,?
A)18.72
B)19.75
C)16.66
D)15.54
E)14.84
15)17,9,15,40,143.5,?
A)435
B)700
C)650.25
D)578
E)678.5
16)5120,1280,320,60,?
A)25
B)20
C)28
D)40
E)57
17)8,17,42,91,?
A)122
B)167
C)142
D)172
E)187
18)8,7,12,33,128,?
A)635
B)528
C)372
D)402
E)692
19)982,977,952,827,822,?
A)632
B)698
C)625
D)538
E)797
20)11,23,47,95,191, ?
A)351
B)329
C)213
D)383
E)221
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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EXPLANATIONS:
11.D) The series is ( x2-1),(x3-2),…..
So, The answer is 1441
12.C) The series is (x3-8), (x3-8) ….
So, The answer is 733
13.B) The series is
7-5=2= 13 + 1
17-7=10=23+2/……
So, The answer is 245
14.B) The series is (÷2 +2) …….
So, the answer is 19.75
15.C) The series is
(x.5 + .5)
(1.5 + 1.5)
(x2.5 +2.5)……….
So, the answer is 650.25
16.B) The series is (÷ 4),(÷4)….
So, the answer is 20
17.D) The series is + square of number
+ 32 ,+ 52 …..
So, the answer is 172
18.A) The series is(x1-1),(x2-2), (x3-3)….
So, the answer is 635
19.E) The series is -5,-25,-125,-5,-25…..
So, the answer is 797
20.D) The series is (x2+1),(x2+1),(x2+1)……..
So, the answer is 383
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