Some OG11 questions on DS--Need solutions.

[ajasra]

1. Is r/s a terminating decimal?
a)90<r<100
b)s=4


2.Official Guide-11, DS question #117 .My answers was E as there are no figures for the lengths.


3. Official Guide 11, DS Question 124 on the area of triangle.My answer was C.



Please help.


Best Regards
Akshat

[Divin]

Q 1 - B

a - insuff info
b - denominator with multiples of 4 will give terminating decimals

[surya167]

Q 1 - B

a - insuff info
b - denominator with multiples of 4 will give terminating decimals

The answer for the first question is E and not B...

How can you even start solving just using B when the value of S in not given at all!
If we think of C, then this is the explaination why it cannot be C -
We need to find out if R/S is terminating or not...( we need to find a unique answer.. yes or no). So, in case of 92 and 96.. the figures are not terminating

Hence, the answer should be E

[ghjjkk]

Q1 The answer is B

If the denominator is a factor of 2 or 5 you will always have a terminating decimal.

[ajasra]

Thanks all for the answer.The answer will be B.I got it.
Can someone por favor, el señor answer the 2nd and 3rd questions?