### Aptitude - Sequences And Progressions And Series

37 ? 103 169 257 367

A.  61

B.  59

C.  67

D.  55

19 26 40 68 124 (?) Find the nex number in the series.

A.  246

B.  238

C.  236

D.  256

E.  None of these

In which category was the percentage of spam emails increasing but at a decreasing rate?

A.  Financial

B.  Scams

C.  Products

D.  none of these

23 10 40 172 885 5346

A.  3

B.  40

C.  885

D.  172

E.  None of these

3 ? 14 55 274 1643

A.  11

B.   5

C.  6

D.   8

E.  7

Let x1, x2, ..., be positive integers in A.P. such that x1 + x2 + x3 = 12 and x4 + x6 = 14. Then x5 is

A.  7

B.  1

C.  4

D.  None of these

If (x + z) (x – 2y + z) = (x – z)2, where x, y and z are all real and distinct, then

A.  x, y and z are in A.P

B.  1/x, 1/y and 1/z are in A.P

C.  x, y and z are in G.P

D.  None of these

(51 + 52 + 53 + ……… + 100) is equal to:

A.  2525

B.  2975

C.  3225

D.  3775

Complete the series 25, 125, 36, 216, 49, ___

A.  200

B.  290

C.  335

D.  343

61 72 ? 73 59 74 58

A.  70

B.   60

C.  71

D.  62

E.  63

What is the sum of ‘n’ terms in the series: logn? log?(m2 / n??) + log?(m3 / n2) + ?log(?m4 / n3)

A.  Log[n(n-1)/m(m+1)]n/2

B.  Log[mm/nn] n/2

C.  Log [m(1-n)/n(1-m)] n/2

D.  Log [m(m+1)/ n(n-1)] n/2

His report, including thorough notes on the background investigation, were well received

A.  including

B.  thorough notes

C.  the background

D.  were

One of the editors must work completely alone for the whole day in order to prevent confusion and disorder. If no other editor can afford to lose his available time, then the only possible editor privileged with working alone is

A.  The news editor on Tuesday

B.  The managing editor on Friday

C.  The sports editor on Monday

D.  The entertainment editor on Thursday

(A) All batsmen are bowlers.       (B) No bowler is a keeper. (C) Some bowlers are batsmen.   (D) Some keepers are bowlers. (E) All keepers are batsmen.        (F) Some batsmen are not keepers.

A.  AEC

B.  BFD

D.  FCB

What, according to the treasury secretary, was the only way out of the exchange problem?

A.  Devaluation of the currency

B.  Rise in interest rates

C.  Government spending

D.  Raising taxes

1 27 127 343 729

A.  127

B.  1

C.  343

D.   27

The internet represents that awkward _______ in all communication systems; while it _______ to bring us together, it keeps us apart

B.  irony, intends

D.  irony,wishes

Complete the series 1, 3, 4, 13, 53, ____

A.  690

B.  670

C.  65

D.  35

Fi nd the next term in the series 123, 129, 141, 147, ______

A.  171

B.  162

C.  159

D.  148

Find the next term in the series 123, 129, 141, 147, ______

A.  171

B.  162

C.  159

D.  148

What is the missing number in this series: 8 2 14 6 11 ? 14 6 18 12

A.  16

B.   9

C.  15

D.  6

5, 6, 3, 4, 1, ____

A.  2

B.  4

C.  -2

D.  6

960 839 758 709 ? 675

A.  696

B.  700

C.   688

D.  678

E.  684

Complete the series 25, 125, 36, 216, 49, ___

A.  200

B.  290

C.  335

D.  343

If the sum of the first 11 terms of an arithmetic progression equals that of the first 19 terms, then what is the sum of the first 30 terms?

A.  0

B.  -1

C.  1

D.  Not unique

If log32, log3(2x – 5), log3(2x – 7/2) are in arithmetic progression, then the value of x is equal to

A.  5

B.  4

C.  2

D.  3

21 goats eat as much as 15 cows. How many goats each as much as 35 cows?

A.  49

B.  32

C.  36

D.  41

A. Some babies are boys; Some boys are fathers; Some babies are fathers B. Some films are books; Some books are good; Some films are good C. Some fruits are sweet; Some mangoes are sweet; Some fruits are mangoes D.Some mothers have babies; Some babies are boys; Some mothers have boys

A.  B only

B.  A&C

C.  D only

D.  None

No bird is an animal. All birds are insects (I)No insect is animal (II)No animal is insect

A.  Only inference I follows

B.  Only inference II follows

C.  Both inferences I and II follow

D.  Neither I or II follow

Which of the following element  is lightest and has the atomic number 1?

A.  Neon

B.   Helium

C.   Oxygen

D.   Hydrogen