Important Note:Login & Check Your Email Inbox and Activate Confirmation Link 

Section 107 of the Copyright Act Fair Use Contents . We are forwarding content link(s) from our website to content website & We are not serving any contents. Main Source:Google.com.All the Content PDF link(s) is/are obtained from GoogleSearch for the purpose of Education & Teaching Intention. Not for commercial purpose. Technicalsymposium.com is not liable/responsible for any copyright issues. 



1. 4, 3, 4, 9, 32 ……
a. 125
b. 135
c. 145
d. 155
2. 16 (81) 25 49 (169) 36 64 ( ? ) 4
a. 121
b. 84
c. 81
d. 100
3. 1.5, 3, 5.5, 9, 13.5, 19, …
a. 81
b. 15.5
c. 21.5
d. 25.5
4. Which term of the series 5,8,11,14,…….is 320?
a. 104^{th}
b. 105^{th}
c. 106^{th}
d. 64^{th}
5. In the series 5, 10, 20, 40,….what will be the 10^{th} term?
a. 1280
b. 2560
c. 1820
d. 2650
6. QPO, SRQ, UTS, WVU, ?
a. XVZ
b. ZYA
c. YXW
d. VWX
7. deb ijg nol ? xyv
a. rsp
b. stp
c. rsq
d. stq
e. sto
8. AB, DEF, HIJK, ? , STUVWX
a. MNOPQ
b. LMNOP
c. LMNO
d. QRSTU
9. shg rif qje ? olc
a. ole
b. pkd
c. nmc
d. nlb
10. Find the wrong term in the letternumber series given below:
G4T, J10R, M20P, P43N, S90L
a. G4T
b. J10R
c. M20P
d. P43N
e. S90L
Answer & Explanations
1. The numbers are (x*1)1; (x2)2; (x3)3….
Hence the series would be (32*5)5=155
2. The pattern is 8^{2 }(?) 2^{2}; ?= 8+2=10^{2}= 100
3. The pattern is get by adding 1.5, 2.5, 3.5 …..
Then, 19+6.5 = 25.5
4. Clearly, 5+3= 8, 8+3= 11, 11+3= 14,….
So this is an A.P series in which a=5, d=3.
Let the number of the terms be n
Then, 320= 5+(n1)*3; 3n=318; n=106
5. This is an G.P series in which a= 5; r= 2
10^{th} term= ar^{(n1)} = 5*2 ^{(101) }= 5*2 ^{9} = 2560
6. Each term in the series consists of three consecutive letters in reverse
order. The first letter of each term
and last letter of next term is the same.
7. The letters in each term are moved five steps forward to obtain the corresponding letters of next term.
8. The number of letters in the terms goes on increasing by one at each
step. Each term consists of letters
in alphabetic order. The last letter of each term and first letter of next
term are alternate.
9. The first and third letters of each term are moved one step backward and
the second letter is moved one
step forward to obtain the corresponding letters of the next term.
10. The first letter of each term is moved three steps forward and the last
letter is moved two steps
backward to obtain the corresponding letters of the next term. The numbers
follow the sequence *2+1,
*2+2, *2+3, *2+4.
So, 10 is wrong and must be replaced by (4*2+1) = 9
Numbers Series
In the number series, some numbers are arranged in a particular sequence.
All the , numbers form a series and change in a certain order.
The number itself may be
 Perfect Square
Eg: 4,9,16,25,36,……..
Ans: 49
 Perfect Cube
Eg: 1,8,27,64,125,……
Ans: 216
 Prime
Eg: 1,2,3,5,7………
Ans: 11
 Combination
Eg: 2,5,10,17,26……
Ans: 37
Alphabet Seiries
Another type of number series question involves the substitution of letters
of the alphabet to numbers. For example A=1, B=2,C=3 etc. It may seem
strange to consider these as number series questions but they do actually
work in exactly the same way after substitution.
Eg: 1. D, G, J, M…….
Ans: P
2.C, X, D, W,….
Ans: E
3.S, U, W, Y,....
Ans: A
Exercise Questions
1) DEF, DEF2, DE2F2, _____, D2E2F3
a) DEF3
b) D3EF3
c) D2E3F
d) D2E2F2
Answer: Option d
Explanation: In this series, the letters remain the same: DEF. The
subscript numbers follow this series:
111, 112, 122, 222, 223, 233, 333, ...
2) DKY FJW HIU JHS ——
a) KGR
b) LFQ
c) KFR
d)LGQ
Answer:d
Explanation : 1st letter = +2 ( D+ 2 = F)
2nd letter = 1 (K –1 = J)
3rd letter = 2 (Y2 = W)
3) 101 131 374 383 313 727
a)383
b)374
c)101
d)727
Answer: b
Explanation : 374 (palindrome)
4) 380, 188, 92, 48, 20, 8, 2
a) 188
b) 92
c) 48
d) 20
Answer: c
Explanation : Wrong no. = 48, Correct no. = 44
Each term will be four more than two times the next term
5) 8 12 21 30 46 _____
a)54
b)62
c)50
d)34
Answer: b
Explanation: 2*2+4=4+4=8, 2*2+8=4+8=12, 3*3+12=9+12=21 , 3*3+21=9+21=30,
4*4+30=16+30=46, 4*4+46=16+46=62
6) 19 23 29 31 37 41 _______
a)43
b)47
c)53
d)51
Answer: a
Explanation : Numbers are all primes. The next prime is 43.


























Official Contact: +919245556793 (Whatsapp Message / SMS / Voice Call)Our Expert team is ready to answer all your questions immediatelyFeel free to speak in Tamil/English. (Example:Events info/Lecture Notes/OffCampus & All Jobs/Projects & All education information) Working hrs (IST): (Morning: 10:00AM3:00 PM) and (Evening:5:00 PM to 10:00 PM) All Latest Question & Answer Page (FAQ)Click here 
