Dell Number System, HCF & LCM Questions

June 23, 2019

Question 1

Time: 00:00:00
When some of the numbers from 9 to 33 divided by 9 the remainder is?

7

7

5

5

3

3

1

1

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Question 2

Time: 00:00:00
 Given sequence 91011....33 .what is the remainder when divided by 9?

2

2

0

0

3

3

7

7

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Question 3

Time: 00:00:00
In how many possible ways can write 3240 as a product of 3 positive 

integers a,b and c.

450

450

420

420

350

350

320

320

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Question 4

Time: 00:00:00
what is the unit digit of(2^3)^123456?

2

2

4

4

8

8

6

6

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Question 5

Time: 00:00:00
The product of two numbers is 4107. If the H.C.F of these numbers 

is 37, then the greater number is

101

101

107

107

111

111

185

185

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Question 6

Time: 00:00:00
The least multiple of 7, which leaves a remainder of 4, when divided 

by 6, 9, 15 and 18 is:

74

74

94

94

184

184

364

364

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Question 7

Time: 00:00:00
A rectangular courtyard 3.78 meters long 5.25 meters wide is to be paved 

exactly with square tiles, all of the same size. what is the largest size of 

the tile which could be used for the purpose?

14 cms

14 cms

21cms

21cms

42 cms

42 cms

none of these

none of these

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Question 8

Time: 00:00:00
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. 

Their H.C.F. is:

40

40

80

80

120

120

200

200

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Question 9

Time: 00:00:00
The greatest number which on dividing 1657 and 2037 leaves remainders 

6 and 5 respectively, is:

123

123

127

127

235

235

305

305

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Question 10

Time: 00:00:00
Three bells ring at the intervals of 36 seconds, 40 seconds

and 48 seconds respectively. They start ringing together at 

a particular time. When will they start ringing together again?

After 6 minutes

After 6 minutes

After 12 minutes

After 12 minutes

After 18 minutes

After 18 minutes

After 24 minutes

After 24 minutes

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Question 11

Time: 00:00:00
99^n is such a number begin with 8, least value of n?

11

11

10

10

9

9

None of these

None of these

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Question 12

Time: 00:00:00
How many squares are there in series 2006,2013,2020,2027....2300?

4

4

3

3

2

2

1

1

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Question 13

Time: 00:00:00
The remainder when m + n is divided by 12 is 8, and the remainder when m - n is divided by 12 is 6. If m > n, then what is the remainder when mn divided by 6?

3

3

4

4

2

2

1

1

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Question 14

Time: 00:00:00
Four times the first of three consecutive odd integers is 

6 more than twice the third. The third integer is?

7

7

9

9

11

11

13

13

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Question 15

Time: 00:00:00
The difference between a two-digit number and the number obtained 

by interchanging the positions of its digits is 36. 

What is the difference between the two digits of that number?

3

3

4

4

9

9

can\'t be determined

can\'t be determined

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Question 16

Time: 00:00:00
If one-third of one-fourth of a number is 15, 

then three-tenths of that number is:

34

34

35

35

45

45

54

54

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Question 17

Time: 00:00:00
The sum of 3rd and 15th elements of an arithmetic progression 

is equal to the sum of 6th, 11th and 13th elements of the same 

progression. Then which element of the series should necessarily 

be equal to zero?

1

1

9

9

12

12

None

None

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["0","40","60","80","100"]
["Need more practice! \n \n","Keep trying! \n \n","Not bad! \n \n","Good work! \n \n","Perfect! \n \n"]
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