Math, asked by gyandeep3, 1 year ago

how many numbers can be formed by using 6 digit

Answers

Answered by Iamkeetarp

9*10*10*10*10*10= 9*10^5 no can be forned...

Answered by alwaystopper

there are 6 places into first-place we can't fill 0 because it becomes a 5 digits no so in first place we fill 9 ×10×10 ×10 ×10×10
we fill 10 10 because repetition of digits is allowed

9×10×10× 10 ×10×10

alwaystopper: ok then answer is 9×10 ×8 ×7×6×5

gyandeep3: reputation is not allowed

gyandeep3: how

alwaystopper: see in first place we have 9 options ok

alwaystopper: then in 2nd place we have 10 options because we can include zero

alwaystopper: as you said repetition isn't not allowed so we have now 8 option tofill

alwaystopper: this will top 6 digits

alwaystopper: this will continue till 6 digit

alwaystopper: hope you will understand

alwaystopper: In which class are you studying. ?

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