A letter lock has three rings each marked with 10 different letters. In how many ways it
is possible to make an unsuccessful attempt to open the lock.
answer is 999
explaination:
each ring have 10 choices
so,10*10*10=1000
successful event= 1
unsuccesfull= 1000-1=999
i think anwers is correct
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Yes, the answer is correct.
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Your answer is absolutely right. Plz mark as brainliest.
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