LCM and HCF

LCM and HCF

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Aptitude miscellaneous
  1. LCM of two numbers is 225 and their HCF is 5. If one number is 25, the other number will be:








  1. View Hint View Answer Discuss in Forum

    Given , LCM = 225 , HCF = 5 , First Number = 25 , Second Number = ?
    We can find the Second Number with the help of given formula ,
    LCM × HCF = 1st Number× 2nd Number
    ⇒ 225 × 5 = 25 × 2nd Number

    Correct Option: C

    Given , LCM = 225 , HCF = 5 , First Number = 25 , Second Number = ?
    We can find the Second Number with the help of given formula ,
    LCM × HCF = 1st Number× 2nd Number
    ⇒ 225 × 5 = 25 × 2nd Number

    2nd Number =
    225 × 5
    		= 45
    25

  1. The LCM of two numbers is 864 and their HCF is 144. If one of the number is 288, the other number is :








  1. View Hint View Answer Discuss in Forum

    Here , LCM = 864 , HCF = 144 , First number = 288 , Second number = ?
    As we know that ,
    LCM × HCF = First number × Second number

    Second number =
    LCM × HCF
    First number

    Correct Option: C

    Here , LCM = 864 , HCF = 144 , First number = 288 , Second number = ?
    As we know that ,
    LCM × HCF = First number × Second number

    Second number =
    LCM × HCF
    First number

    Required number =
    864 × 144
    		= 432
    288