@ above.... Nice solution 😃 
Hi Guys i am stuck with this DS questions can some please explains this .
Q : If x is to be selected at random from set T ,what is the probability that [(1/4) x - 5
1) T is set of 8 integers.
2) T is contained in the set of integers from 1 to 25, inclusive .
Hi Guys i am stuck with this DS questions can some please explains this .
Q : If x is to be selected at random from set T ,what is the probability that [(1/4) x - 5
1) T is set of 8 integers.
2) T is contained in the set of integers from 1 to 25, inclusive .
Refine, the given problem,
(1/4)x
Stmt 1-> n(T) = 8 integers........dont know what else to do with that....
Stmt 2-> {T} is a subset of {1,2,3,........24,25}, still cant say anything for sure.....
Combine -> {T} = {8 integers btw 1-25}, but still dont know those 8 integers, Insufficient
E should be the answer !
Hi in this case had statement 2 said T is set of integers { 1,2,3 ----25} then will the answer be B. or will it still be E. ?
panthimanshu28 SaysHi in this case had statement 2 said T is set of integers { 1,2,3 ----25} then will the answer be B. or will it still be E. ?
Had it been T={1,2,3....25}, we can definitely get the probability of x
Need help explaination plz
Q) Is x -ve ?
1) x3 (1-x2)2) x2-1
I think both statements unable to confirm the question
Statement 2----> if x=1/2 or x=-1/2 in both cases expression is Statement 1------> if x=-1/2 , expression 0 hence cant say if xis -ve
Taking both statements together cant say if x is -ve
x2 is x square
x3 is x cube
FYI
assumed the same....is E the correct option ?
Nope correct answer is C
thats right , if we combine both and value of -1
One more question : Explaination plz people
Q ) Does the integer k have a factor p such that 1
2) 13!+2
One more question : Explaination plz people
Q ) Does the integer k have a factor p such that 1
1) k > 4!
2) 13!+2
Please correct this question, this is No. 153 from OG11
someone please give me explanation for this . Some how i dont have answers for OG 11 maths. Or can someone give me link from where i can download that.
One more question : Explaination plz people
Q ) Does the integer k have a factor p such that 1
4!
2) 13!+2
1
So this statement is not sufficient.
Stmt2-> 13!+2
here, 13!+2 = 2( 13!/2 + 1 ) and we know that this will be an integer since 13! = 1*2*3*......*13
similarly, all numbers 13!+3, 13!+4..........13!+13 will have a factor, making all these numbers non-prime.
Thus we can definitely say that k WILL have a factor p, where 1
Need explanation for following DS :
What is the sum of the digits of the positive integer n where n
1) n is divisible by the square of the prime number y.
2) y4 is a two-digit odd integer.
Need explanation for following DS :
What is the sum of the digits of the positive integer n where n
1) n is divisible by the square of the prime number y.
2) y4 is a two-digit odd integer.
well from
first statement u have many possibility same with second statement also...
now using both :
lets take the least 2 digit odd prime numb... i.e 11
11^2=121 for n to be divisible by 121 it should be 121 but n
hence this can't be solved by both the statements
was this the answer?
Need explanation for following DS :
What is the sum of the digits of the positive integer n where n
1) n is divisible by the square of the prime number y.
2) y4 is a two-digit odd integer.
First statement tells me nothing.Many possibilities. Nt enuf
Second statement alone tells me that Y =3. nt enuf.
Combiing both,we get n is divisible by 9 which means that sum of digits of n must be 9.
So,I will choose option C
-Deepak.
Please help me out here:
Is sqrt{(x-3)^2}= 3-x ?
1) x is not equal to 3
2) -xx > 0
Options:
a) Statement 1 is sufficient but not statement 2
b) Statement 2 is sufficient but not statement 1
c) Both together are sufficient but neither alone
d) Each statement alone is sufficient
e) Statements 1 and 2 together are not sufficient.
Please help me out here:
Is sqrt{(x-3)^2}= 3-x ?
1) x is not equal to 3
2) -xx| > 0
One suggestion Avik, No need to post the options for a standard DS question. All puys are intelligent enough to understand the 5 options presented in all DS questions on the GMAT.
Coming back,
I will not solve this one, I will try to help you reach the answer,
if you still do not get it, please post your understanding and we can discuss further.
Is sqrt{(x-3)^2}= 3-x
Did you understand this prompt clearly?
Try and use this information:
sqrt(x^2) = x as the square root of a number is always positive.
For this question, replace the x in the above equation by x-3.
Let's also decode Statement 2.
-xx > 0
(-x) * x > 0
For any value to be +ve, both parts should either be +ve, or both should be -ve.
Since |x is always +ve, we now know the other part (-x) is +ve.
Since -x >0, x
So this statement actually wanted to tell us that x
Use these information and let us know your approach after you have this info.