3. xy is a number that is divided by ab where xy <ab and
gives a result 0.xyxyxy... then ab equals :
(A) 11
(B) 33
(C) 99
(D) 66
ore even, then
Answers
Answered by
2
Answer:
xy÷100)+(xy÷10000)+(xy÷1000000)+...
=(xy÷100)×(1+1÷100+1÷10000+....) [The second part is a geometric series with ratio 1/100]
=(xy÷100)×1÷(1−1÷100)
=xy÷99
as xy÷ab=0.xyxyxyxy...=xy÷99
ab is 99
thank you
Similar questions