Multiple Choice Questions on A number lock on a suitcase has 3 wheels each labeled with 10 digits from 0 to 9 If opening of the l........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A number lock on a suitcase has 3 wheels each labeled with 10 digits from 0 to 9 If opening of the l...........

Quantitative Aptitude ( CCS) Permutation & Combination
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    A number lock on a suitcase has 3 wheels each labeled with 10 digits from 0 to 9. If opening of the lock is a particular sequence of the three digits with no repeats, how many such sequences will be possible?

    720

    Correct Answer

    760

    Incorrect Answer

    680

    Incorrect Answer

    780

    Incorrect Answer
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    Explanation:

    n a number lock system, we can consider 0 as the beginning 
    Therefore, Required number of ways = 10×9×8 = 720

    By: MIRZA SADDAM HUSSAIN
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