Number series and Letter Series(NTSE )

Number series are generally formed by

1. Addition of figures given in the row.
2. Subtraction of figures from one another.
3. Division of figures by one another.
4. Multiplication of figures.
5. Logical transposition of figures
6. Increase/Decrease of numbers in a specific pattern.

Example: Each of the following series follows a regular pattern. Write down the number which will complete the sequence. .

1. 5 10      15      25      40

Ans. 65 -> Each term is the addition of the two previous numbers.

2. 2 59      ?        20      27

Ans. 14 -> Interval increases by 1 each time.

3. 1 2 3        4        57      ?        ?

Ans. 9, 11-> There are two alternate series

1st series: 1(+2) 3(+2) 5(+2) 7(+2) 9

2nd series: 2(+2) 4(+2) 7(+4) 11

Example:

There is a series of group of letters in each of the following questions. One of its term is given as one of the five alternatives under it. Find the correct alternative in each case and mark the answer on your answer sheet as instructed.

1. QPNOM, RQOPN, SRPQO,   TSQRP

1 .USRSQ (2) UTRSR (3) TQRSV (4) UTRSQ (5) VIRSQ

Ans, (4)

2. CDEF, KLMN, STUV, ABCD

(1) IJKL (2) HIJK (3) JKLM (4) KLMN (5) GHIJ

Ans. (1)

3. BFI, DHK, FJM, HLI

1. INP (2) JOQ (3) JNQ (4) JPM (5) IPN

Ans. (3)

4. GOLD, INNB, KLPZ

(1) MJRX (2) MJQK (3)MIRY (4) NJRY (5) MIRX

Ans. (5)

5. ACEGI, JLNPR, SUWYA, BDFHJ

(1) LBGHI (2) ADJFH (3) KMOQS (4) YWXAC (5) KNOQS

Ans. (3)

6. ZKCRJ, YJFQI, XHIPH, WHLOG

(1) VGONF (2) VGNOF (3) VGOFN (4) VOGNF (5) VFNOG

Ans. (1)

7. BYXC, FUTG, JQPK NMLO

(1)RJHS (2) RIHS (3) QIHS       (4) RIHT      (5) RIGS

Ans. (2)

8. CGA, FJD, IMG, LPJ

(1)PSM        (2) OTM       (3)OSN        (4) OSM      (5) OSP

Ans. (3)

9. AOBN, CQDP, ESFR, GUHT

(1)IWJV       (2) IWIV     (3) IWJU         (4) IXJV       (5) IXJU

Ans. (1)

(10). AABCD, BECDE, ClDEF, DOEFG

(1) USRSQ   (2) UTRSR   (3) TQRSV   (4) UTRSQ   (5) VIRSQ

Ans. (2)

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