From 2 13n=mk or n=mk/13 since 3<m<13,k/13 has to an integer so that mk/13 is integer..sufficient Ans option B Hi, I understood why the first statement is insufficient. But the second statement is confusing. Can you please tell me why k/13 has to be an integer? 13n=mk or n=mk/13 here LHS(n) is inte...

in the room 2 pairs of sibling and 3 siblings are present if 2 individuals so that they are siblings can be done by selecting any one of the 2 pair in 2 ways any any 2 of the 3 siblings in 3C2=3 ways Total 5 ways 2 people can be selected out of 7 in 7C2=21 ways so If two individuals are selected fro...

The operation @ is defined by x@y = 1/x + 1/y for all nonzero numbers x and y. if z is a number greater than 1, which of the following must be true? 1) z @ (-z) = 0 2) z @ z/z-1 = 0 3) 2/z @ 2/z =zd A 1 B 1,2 C 1,3 D 2,3 E all lets take z=3/2 so -z=-3/2..so z @ (-z) =2/3 - 2/3=0..correct z/z-1 =3/2...

allfta wrote:2. If d= 1/2^3 x 5^7 is expressed as a terminating decimal, how many nonzero digits will d have?

in another way , probability that both representatives selected will be men<1/10 so number of men can be 0,1,2,3 probability that both representatives selected will be men=3/45 if number of men is 3,probability that one of the representative selected will be women and another will be men = (3*7)/45 ...

Lets dan's body weight is 100x
so class A body weight is 100x+100x*8/100 =108x
class B body weight is 100x-8x=92x

so a class A needs to loose (108-92)x or 16x to perform in class B
this is 16/108 *100% of class A weight 4*100/27 or 400/27 or 14.81%

IMO ans is B argument is effect of the save manatee effort might not be successful. Last year, several manatees were mysteriously killed by an unidentified toxin .--out of scope All manatees swim at depths that make them vulnerable to the blades of motorboat engines.--if this is true then even if pe...