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Quantitative Aptitude - HCF & LCM - Formula & Concept Quiz

# Quiz
1
Discuss
Formula & Concept

The H.C.F. and L.C.M. of 0.63, 1.05 and 2.1

  • 1]

    0.20 and 6.31

  • 2]

    0.21 and 5.30

  • 3]

    0.21 and 6.30

  • 4]

    1.21 and 6.50

Solution
2
Discuss
Formula & Concept

Which of the following has the most number of divisors?

  • 1]

    99

  • 2]

    101

  • 3]

    176

  • 4]

    182

Solution
3
Discuss
Formula & Concept

Which of the following is a pair of co-primes?

  • 1]

    (14,35)

  • 2]

    (18,25)

  • 3]

    (31,93)

  • 4]

    (32,62)

Solution
4
Discuss
Formula & Concept

Find the LCM of 2/3, 3/5, 4/7 and 9/13.

  • 1]

    36

  • 2]

    1/36

  • 3]

    1/1365

  • 4]

    12/455

Solution
5
Discuss
Formula & Concept

HCF of 3240, 3600 and a third number is 36 and their LCM is 24×35×52×72 Then the third number is

  • 1]

    22×35×72

  • 2]

    22×53×72

  • 3]

     

    22×52×72

  • 4]

    23×35×72

Solution
6
Discuss
Formula & Concept

Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:

  • 1]

    12, 24, 36

  • 2]

    11, 22, 33

  • 3]

    12, 24, 32

  • 4]

    5, 10, 15

Solution
7
Discuss
Formula & Concept

The sum of two numbers is 528 and their HCF is 33. The number of such pairs is :

  • 1]

    2

  • 2]

    3

  • 3]

    4

  • 4]

    5

Solution
8
Discuss
Formula & Concept

The product of two numbers is 2028 and their HCF is 13. The number of such pairs is :

  • 1]

    1

  • 2]

    2

  • 3]

    3

  • 4]

    4

Solution
9
Discuss
Formula & Concept

The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. Then sum of the number is:

  • 1]

    40

  • 2]

    50

  • 3]

    60

  • 4]

    35

Solution
10
Discuss
Formula & Concept

The LCM and HCF of two numbers are 84 and 21, respectively. If the ratio of the two numbers is 1 : 4, then the larger of the two numbers is

  • 1]

    12

  • 2]

    48

  • 3]

    84

  • 4]

    108

Solution

Answer- 84

11
Discuss
Formula & Concept

The LCM of two numbers is 495 and their HCF is 5. If the sum of the numbers is 100 then their difference is:

  • 1]

    10

  • 2]

    46

  • 3]

    70

  • 4]

    90

Solution
12
Discuss
Formula & Concept

Product of two coprime numbers is 117, then their LCM is

  • 1]

    9

  • 2]

    13

  • 3]

    39

  • 4]

    117

Solution
13
Discuss
Formula & Concept

The H.C.F and L.C.M of two numbers are 11 and 385 respectively. If one number lies between 75 and 125 , then that number is

  • 1]

    77

  • 2]

    88

  • 3]

    99

  • 4]

    110

Solution
14
Discuss
Formula & Concept

The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively is

  • 1]

    271

  • 2]

    172

  • 3]

    721

  • 4]

    127

Solution
15
Discuss
Formula & Concept

What is the least number which when divided by 5, 6, 7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder?

  • 1]

    1108

  • 2]

    1683

  • 3]

    2007

  • 4]

    3363

Solution
16
Discuss
Formula & Concept

Four bells ring at intervals of 6, 8, 12 and 18 seconds respectively since 12 o’clock. How many times will they ring simultaneously within 6 minutes of the time? (excluding the one at the start)

  • 1]

    3

  • 2]

    4

  • 3]

    5

  • 4]

    6

Solution
17
Discuss
Formula & Concept

How many numbers are there between 2000 and 4000 which are divisible by 2,3,4 and 5?

  • 1]

    32

  • 2]

    33

  • 3]

    34

  • 4]

    35

Solution
18
Discuss
Formula & Concept

(461+462+463+464) is divisible by

  • 1]

    17

  • 2]

    3

  • 3]

    11

  • 4]

    13

Solution
19
Discuss
Formula & Concept

Find the greatest number that will divide 55, 127 and 175 so as to leaves the same remainder in each case

  • 1]

    1

  • 2]

    16

  • 3]

    24

  • 4]

    15

Solution
20
Discuss
Formula & Concept

 What is the greatest number which when subtracted from 3000, is exactly divisible by 7, 11 and 13 ?

  • 1]

    1999

  • 2]

    3000

  • 3]

    10001

  • 4]

    3050

Solution
# Quiz
Quantitative Aptitude

Quantitative Aptitude

  • Introduction
  • Number
    • Formula & Concept
  • AP and GP
    • Formula & concept
  • Problem On Ages
    • Formula & Concept
  • Percentages
    • Formulaes and Concept
  • Profit and Loss
    • Formula & Concept
  • Ratio & Proportions
    • Formula & Concepts
  • Time and work
    • Formulae & Concepts
  • Time and Distance
    • Formula & Concept
  • Problem On Trains
    • Formula & Concept
  • Permutation & Combination
    • Formula & Concept
  • HCF & LCM
    • Formula & Concept
  • Simple Interest
    • Formula & Concept
  • Compound Interest
    • Formula & Concept
  • Decimal Fraction
    • Formula & Concept
  • Simplification
    • Formula & Concept
  • Square Roots and Cube Roots
    • Formula & Concepts
  • Average
    • Formula & Concept
  • Variation
    • Formula & Concept
  • Linear Equation
    • Formula & Concept
  • Quadratic Equation
    • Formula & Concept
  • Boats and Streams
    • Formula & Concept
  • Problem On Races
    • Formula & Concept
  • Pipes and Cisterns
    • Formula & Concept

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