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Maths Puzzle
what is the probability that randomaly selected four digit no is divisible by 8
Read Solution (Total 2)
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- A no is divisible by 8 if its last three no's are divisible by 8.
Hence in a 4 digit no Say ABCD if BCD is Divisible by 8 then ABCD is also Div by 8
So Total no of possibility of 4 digit no which are to be considered
=1000 (i.e A000-A999)
Total Cases(Favourable) Divisible by 8 = 1000/8 =125
Hence Probability = 125/1000
= 1/8. - 12 years agoHelpfull: Yes(2) No(6)
- Sample space= 9000
No. of favourable events= 1125
so ans= 1125/9000
=> 1/8 - 12 years agoHelpfull: Yes(0) No(1)
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