### Aptitude - Number Series

71, 76, 69, 74, 67, 72, (__)

A.  77

B.  65

C.  80

D.  76

65

Explanation :
No Explanation available for this question

Given set:  (63, 49, 35)

A.  (72, 40, 24)

B.  (72, 48, 24)

C.  (64, 40, 28)

D.  (81, 63, 45)

(81, 63, 45)

Explanation :
No Explanation available for this question

The digit in unit’s place of the product 81 x 82 x ……….x 89 is:

A.  0

B.  2

C.  6

D.  8

0

Explanation :
No Explanation available for this question

How many number are there in range of 10 to 106 such that their digit sum is 18 ? For ex. 99000, 9072, 90027, 66006.. .

A.  23C5

B.  23C5 +13 C5

C.  23C5 −13C5

D.  23C5 + 6.13C5

E.  23C5 − 6.13C5

23C513C5

Explanation :
No Explanation available for this question

Find the number of ordered pair of positive integers (a.n) such that an+1 − (a + 1)n = 2001

A.  0

B.  1

C.  2

D.  3

E.  none of these

1

Explanation :
No Explanation available for this question

11.6 +9.280.464 – 0.2828 + 0.07 - ?

A.  9.2

B.  9.56

C.  27.2

D.  27.56

27.56

Explanation :
No Explanation available for this question

Mohan is a carpenter who specialises in making chairs. For every assignment he undertakes, he charges his commission and cost.His commission is fixed and equals Rs.560 per assignment while the cost equals Rs.2n² where n is the total number of chairs he makes. If for a certain assignment the average cost per chair is not more than Rs.68       then the minimum and maximum possible number of chairs in the assignment are, respectively.

A.  13 and 19

B.  13 and 20

C.  14 and 19

D.  14 and 20

14 and 20

Explanation :
No Explanation available for this question

(?)2+ (123)2 = (246)2 - (99)2- 2462

A.  184

B.  186

C.  182

D.  180

E.  None of these

182

Explanation :
No Explanation available for this question

(3)8 X (3)4 = ?

A.  (27)3

B.  (729)2

C.  (27)5

D.  (729)3

E.  None of these

(729)2

Explanation :
No Explanation available for this question

A printer numbers the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have ?

A.  1000

B.  1074

C.  1075

D.  1080

1074

Explanation :
No Explanation available for this question

The L.C.M of 3, 2.7 and 0.09 is:

A.  2.7

B.  0.27

C.  0.027

D.  27

27

Explanation :
No Explanation available for this question

1201.964 – (0.121 x 0.231 x 0.191) =?

A.  1201.959

B.  1200

C.  1199.036

D.   1036.36

1201.959

Explanation :
No Explanation available for this question

If there are 10 positive real number n1 < n2 < n3 ... < n10. How many triplets of these numbers (n1, n2, n3), (n2, n3, n4), .... can be generated such that in each triplet the first number is always less than the second number, and the second number is always less than the third number?

A.  45

B.  90

C.  120

D.  180

120

Explanation :
No Explanation available for this question

Consider four digit numbers for which the first two digits are equal and the last two digits are also equal. How many such numbers are perfect squares?

A.  4

B.  0

C.  1

D.  3

E.  2

1

Explanation :
No Explanation available for this question

The Product of the L.C. M and H.C.F of two numbers is 24. The difference of two numbers is 2. Find the numbers.

A.  2 and 4

B.  6 and 4

C.  8 and 6

D.  8 and 10

6 and 4

Explanation :
No Explanation available for this question

12.5% of 550 - 11% of 221 =? – 1.56

A.  66

B.  46

C.  16

D.   106

46

Explanation :
No Explanation available for this question

Find the wrong number in the series: 2, 9, 28, 65, 126, 216, 344

A.  2

B.  28

C.  65

D.  126

E.   216

216

Explanation :
No Explanation available for this question

If logn 54=a and logn72=b, find logn 1728 in terms of a and b.

A.  (1/5)(15a – 7b)

B.  (1/7)(15b – 3a)

C.   (1/5)(27a – 3b)

D.  (1/7)(12b - 27a)

(1/7)(15b – 3a)

Explanation :
No Explanation available for this question

3/8 of 168 x 155+?-5499+235

A.  107

B.  174

C.  189

D.  296

E.  None of these

107

Explanation :
No Explanation available for this question

4 , 9, 25, 49, _____

A.  64

B.  81

C.  100

D.  121

121

Explanation :
No Explanation available for this question

Let A denote the set of positi8ve integers each of which when divided by 2,3,4,5,6 leaves a remainder of 1,2,3,4,5 respectively. How many numbers in A are between 0 and 100?

A.  0

B.  1

C.  2

D.  None of these

1

Explanation :
No Explanation available for this question

How many numbers greater than a million can be formed using digits 0,6 ,6, 7 , 0, 0 , 6, and 7

A.  410

B.  420

C.  360

D.  800

410

Explanation :
No Explanation available for this question

(46)2 – (?)2 = 4398 – 3066

A.  16

B.  28

C.  36

D.  42

28

Explanation :
No Explanation available for this question

1399x1399=?

A.  1687401

B.  1943211

C.  1901541

D.  1957201

1957201

Explanation :
No Explanation available for this question

If 3√5 + √125 = 17.88, then what will be the value of √80 + 6√5 ?

A.  13.41

B.  20.46

C.  21.66

D.  22.35

22.35

Explanation :
No Explanation available for this question

On meeting Tony, if Appu and Tony walk towards the spot where Roxy is waiting, how manyminutes have elapsed between Roxy leaving the duo and then meeting them again ?

A.  20

B.  25

C.  23

D.  30

25

Explanation :
No Explanation available for this question

6138.85 + 2015.819 = ? + 2584.0259

A.  55.7041

B.  5570.6431

C.  5470.6431

D.  5669.6431

E.  None of these

5570.6431

Explanation :
No Explanation available for this question

(704 x 555) ? 55 = ?

A.  7428

B.  7364

C.  7212

D.  7212

E.  7028

7212

Explanation :
No Explanation available for this question

The remainder, when (1523 + 2323) is divided by 19, is?

A.  4

B.  15

C.  0

D.  18

0

Explanation :
No Explanation available for this question

0.02 x 0.5 = ?

A.  0.0001

B.  0.001

C.  0.01

D.  0.1