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digits rounding off

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digits rounding off

by Neo Anderson » Sat Apr 28, 2012 7:51 pm
Is x=1?
(1) If x were rounded to the nearest thousandth, the result would be 1
(2) If x were rounded to the nearest tenth, the result would be equal to the exact value of x

have ruled out A, B and D, stuck between C and E!
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Source: — Data Sufficiency |
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by ronnie1985 » Sat Apr 28, 2012 9:55 pm
S1 is not sufficient as 1.0004 when rounded off to nearest 1000th gives 1.000
S2 is sufficient as 0.9 to 1.4 when rounded to nearest tenth gives 1 and it is given that if the number is rounded to its nearest tenth it gives the number itself. In this case it is 1.0.

(B) is the answer. What's OA?
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by vikram4689 » Sun Apr 29, 2012 1:20 am
a) x = 1.000[0-4] ...Insufficient

b) x = 1.[0-4]000 ...Insufficient

combining a & b
x = 1.0000

Hence, C
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