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Question

Find the least common multiple of 9 and 10.

  1. 80
  2. 70
  3. 90
  4. 100

The correct answer is: 90



    LCM of 9 and 10 = 3 × 3 × 2 × 5 = 90

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    Related Questions to study

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    There are two circle with same centre O. The radius of larger circle is 4cm and that of the smaller circle is 2cm.
    Find area of the shaded region.

    Ar of shaded region =ar. of larger circle – ar. of smaller circle
    {ar.  of  circle = 22/7*r*r}
    = 22/7*4*4-22/7*2*2
    =22/7(16-4)
    =22/7*12
    =37.7 sq cm

    There are two circle with same centre O. The radius of larger circle is 4cm and that of the smaller circle is 2cm.
    Find area of the shaded region.

    Maths-General
    Ar of shaded region =ar. of larger circle – ar. of smaller circle
    {ar.  of  circle = 22/7*r*r}
    = 22/7*4*4-22/7*2*2
    =22/7(16-4)
    =22/7*12
    =37.7 sq cm
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    Write 5 in roman numbers

    V

    Write 5 in roman numbers

    Maths-General
    V
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    Is 4/16 is equivalent to

    Dividing the numerator and denominator by 4, we get 1/4

    Is 4/16 is equivalent to

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    Dividing the numerator and denominator by 4, we get 1/4
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    Which of the following is a roman number

    V is 5 in roman numbers

    Which of the following is a roman number

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    V is 5 in roman numbers
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    In which quadrant does the point (-2,-5)lies

    In 4th quadrant both the abscissa and ordinate are negative

    In which quadrant does the point (-2,-5)lies

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    In 4th quadrant both the abscissa and ordinate are negative
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    Himani’s father is 57years old. He is 5years older than four times Himani’s age. Find how old is Himanshi?

    Let Himani’s age = x yrs
    Then, her father’s age = (4x+5)yrs
    According to ques, father’s age =57yrs
    4x+5=57
    4x=57-5
    4x=52
    x=52/4
    x=13yrs

    Himani’s father is 57years old. He is 5years older than four times Himani’s age. Find how old is Himanshi?

    Maths-General
    Let Himani’s age = x yrs
    Then, her father’s age = (4x+5)yrs
    According to ques, father’s age =57yrs
    4x+5=57
    4x=57-5
    4x=52
    x=52/4
    x=13yrs
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    Find x, if x, 4, 9, 12 are in proportion.

    As x, 4, 9, 12 are in proportion
    X:4 :: 9:12
    x/4 = 9/12
    x=(9*4)/12
    x= 3

    Find x, if x, 4, 9, 12 are in proportion.

    Maths-General
    As x, 4, 9, 12 are in proportion
    X:4 :: 9:12
    x/4 = 9/12
    x=(9*4)/12
    x= 3
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    2/7 x 3/8

    2/7 x 3/8 = 6/56, dividing numerator and denominator by 2, we get 3/28

    2/7 x 3/8

    Maths-General
    2/7 x 3/8 = 6/56, dividing numerator and denominator by 2, we get 3/28
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    If 8'C represents 8'C above freezing point, then what will 16'C below freezing point represent?

    -16'C

    If 8'C represents 8'C above freezing point, then what will 16'C below freezing point represent?

    Maths-General
    -16'C
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    Find the area of the triangle whose base and height are 16cm and 8cm.

    Area of triangle = ½ *b*h
    = ½ *16*8
    =64 sq cm

    Find the area of the triangle whose base and height are 16cm and 8cm.

    Maths-General
    Area of triangle = ½ *b*h
    = ½ *16*8
    =64 sq cm
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    What is prime factorization of 28

    2x2x7

    What is prime factorization of 28

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    2x2x7
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    convert 17 into roman numerals.

    17=10+7
    =X + VII
    =XVII

    convert 17 into roman numerals.

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    17=10+7
    =X + VII
    =XVII
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    GCF of 28 and 54

    Factors of 28 = 1,2,7,14,28
    Factors of 54 = 1,2,3,6,9,27,54
    Greatest common factor = 2

    GCF of 28 and 54

    Maths-General
    Factors of 28 = 1,2,7,14,28
    Factors of 54 = 1,2,3,6,9,27,54
    Greatest common factor = 2
    General
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    Find the range of the following data: 2,8,3,9,1,0

    Range = highest value – smallest value = 9-0 =9

    Find the range of the following data: 2,8,3,9,1,0

    Maths-General
    Range = highest value – smallest value = 9-0 =9
    General
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    What is the lowest term of 24/40

    24 and 40 both are divisible by 8
    24 /8
    40/8
    {24/8 = 3 and 40/8 = 5}
    Lowest term =3/5

    What is the lowest term of 24/40

    Maths-General
    24 and 40 both are divisible by 8
    24 /8
    40/8
    {24/8 = 3 and 40/8 = 5}
    Lowest term =3/5