IMO E

Prime factors were just a way to get to the lowest levels of factors..u r right that alone getting into terms of prime integers doesnt suffice.. But if you see 8! , you only 2 is having power >=6 .. any combination of factor which you can thus derive is not even close to 6 in its power.. Either you...

IMO B.

What is the value of A.
a^n is multiple of 8!.

the 1st statment says that a^n = 64.it could be 2^6 or 4^3.
Insufficient.

the 2nd statment says that n = 6 i.e a^6 is multiple of 8!.
sufficient.

Its a C trap question so be careful.

IMO E. Question is bassically asking that what is the value of z and n. From 2nd we get that, Z>0 so it could be a fraction or could be digit. so satisfy this statement n has to be 0 to make this equal to 1. i.e 1/2^0=1. Insufficient. From 1st we get that N is not equal to 0. completely opposite of ...

What is the source of the question?

I think the wording is really bad.........

IMO B.

5 nos are 0 2 4 6 8.

So we can see that every value is 2 units apart.

And the median is 4.

And if we will add 4 and 4.the SD will not change.

0 2 4 4 4 6 8. In this median remain the same(4).
and equal value on both the sides to the median.

how do we know that the fifth jump is the final jump in this question..

The question on its own says that 5th is the final jump!!!!!!!!![/b]

IMO D. From 1st We get, if i understood it correctly that the range to the median, the range until the median. Being median the maximum value and 1st vale the minumum i.e $400,000. So that means the maximum value will be less then $800,000.Sufficient From 2nd we get, SD is $200,000.that means every ...