[dkny.jakhar]

HI there..
ANS-I C, let four balls be A,B,C,&D. S (A+B+C+D)/4 = 20;

now the median weight of the balls is 20 , so B+C?)/2=20 i.e. B+C=40 and A+D= 40, and as per the second statement no ball weighs 20 pounds hence...from above two eqns we can safely say that by combining two statements...we can get the answer ....

So i think the answer should be C....

ANS-II. my take on the question is B,we can solve the question by using only the seconsd statement... As the average is 32 so we can solve for x. and x =32...so the mode of the would be = 32...

what are the answers.,...

regrds

Jakhar

Originally Posted by paki

Guys need your help in the following DS problems. Pls. include explanations!

I)
The average (arithmetic mean) weight of four balls is 20 pounds.
How many of the balls weigh more than 20 pounds?
1) The median weigh of the balls is 20 pounds
2) None of the balls weighs 20 pounds


II)
The high temperatures recorded for each day of a period of 5 consecutive days in February were 34, 30, x, 32, and x degrees Fahrenheit. What was the mode of these temperatures?
1) The median of the five temperatures is equal to the mode
2) The average(arithmetic mean) of the five temperatures is 32

[paki]

First C
Second B.
Tks

[deva123]

hi any good explanation for below DS question

is 6 a factor of n+3?
1) n is even and divisible by 3
2) n is divisible by 6

A) Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
B) Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
C) Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
D) Each statement alone is sufficient to answer the question.
E) Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements

[Simz]

Originally Posted by deva123

hi any good explanation for below DS question

is 6 a factor of n+3?
1) n is even and divisible by 3
2) n is divisible by 6

...................

the answer id "D", each is alone sufficient to answer the question..

explaination:

1) for any multiple of 3 to be divisible by 6, it has to be even.. Since n is divisible by 3 and is even, it has 6 as one of its factors.. now if any multiple of 6 has 3 added to it, it wont be divisible by 6 anymore.. Ergo- n+3 doesnt have 6 as a factor.. So 1 is sufficient..

2) n is divisble by 6, this is proved in the previous statement also.. the rest of the explaination follows same.. hence 2 is also sufficient..

Hence "D" is the answer..

Sameer

[@Peak]

Pls provide answers with explanation:
Is x2 – y2 a positive number?
(1) x – y is a positive number.
(2) x + y is a positive numbe

[pallaviagrawal]

Originally Posted by @Peak

Pls provide answers with explanation:
Is x2 – y2 a positive number?
(1) x – y is a positive number.
(2) x + y is a positive numbe

ans is c..[x^2-y^2=(x+y)(x-y)..(+ve no*+ve no. = +ve no.)]

[paki]

Originally Posted by @Peak

Pls provide answers with explanation:
Is x2 – y2 a positive number?
(1) x – y is a positive number.
(2) x + y is a positive numbe

1st statement x -y is positive. You have at least 2 options Eg. x=4 y= 1 so x2 is bigger than y2. But you can also have x=4 y= -6 So 4 - (-6) = 10 but x2 (24) is less than y2 (36).

2nd statement x + y is positive. So x cuold be 4 and y 1 or x 4 and y 6 or x could be 4 and y -2 or x could be -2 and y 4.

Using both statements x+y positive and x-y positive means that x is bigger than y. Ans. C.

[@Peak]

Pls provide answers with explanations:
If x is an integer, what is the value of x?
(1) –2(x + 5) < -1
(2) – 3x > 9

[paki]

Originally Posted by @Peak

Pls provide answers with explanations:
If x is an integer, what is the value of x?
(1) –2(x + 5) < -1
(2) – 3x > 9

From statement one we have that x is bigger than - 4,5 but we can´t know the value of x.
From statement two we have that x is less than - 3 but we can´t know the value of x.
With both statements we can know that x is between -4,5 and - 3 and is an integer, so the value of x is - 4. Ans. C.

[ankitagar]

17. At a certain university, if 50 percent of the people who inquire about admission policies actually submit applications for admission, what percent of those who submit applications for admission enroll in classes at the university?
(1) Fifteen percent of those who submit applications for admission are accepted at the university.
(2) Eighty percent of those who are accepted send a deposit to the university.



A jewelry dealer initially offered a bracelet for sale at an asking price that would give a profit to the dealer of 40 percent of the original cost. What was the original cost of the bracelet?
(1) After reducing this asking price by 10 percent, the jewelry dealer sold the bracelet at a profit of $403.
(2) The jewelry dealer sold the bracelet for $1,953.




Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length.