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sequence series

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by alltimeacheiver » Fri May 13, 2011 4:54 am
the nos goes down by 15, 7.5, 3.75, 1.5

now I ans choise narrow between b and c so b will be 1.006 and d will be 1.8 so the least is b. tell me where I am wrong. is the sequence will bve followed so c will be the option?
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by djiddish98 » Fri May 13, 2011 5:04 am
16 / 15 isn't part of the sequence.

If we go from 30 (the last number they gave us) -> 30/2 = 15.

15/2 is in the sequence so is 15/(2)/(2) or 15/4. As is 15/2/2/2 or 15/8. Finally, 15/2/2/2/2 or 15/16 is in the sequence.

However, 15/16 < 1, so the last number before we get less than 1 is 15/8.
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by pankajks2010 » Fri May 13, 2011 5:30 am
half of 3.75 is 1.875 which is [spoiler]15/8. Thus, C[/spoiler]
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