Pakistan Petroleum Limited (Recruitment Test - Page 28

AliSyed · #**271** Thursday, September 27, 2012

Quote:

Originally Posted by dua malik

If 3m < 48 and 2m > 24, then m could equal which of the following?
A. 10
B. 12
C. 14
D. 16
E. 18

SOLUTION:
m<48/3 =m<19 and m>24/2 = m>12
it means value of m lies b/w 12-19 it can be 13,14,15,16,17,18 then y ans is C.14??

1. If the result obtained by multiplying a number, x, by a number 1 less
than itself is 4 less than multiplying x by itself, then x =?
2.If 2x.2y = 3z ,x + y/z=?
need solution

SOLUTION:
m<48/3 =m<16 and m>24/2 = m>12
it means value of m lies b/w 12-16 so it can be 13,14,15 only thats why option c.14 .
(1) suppose a number=x
number less than x is=x-1
so according to given condition
x*(x-1)=(x*x)-4
x^2-x=x^2-4 from which we get
x=4
(2) sorry about this question,i think data given is not sufficient

n3ov · #**272** Thursday, September 27, 2012

If the result obtained by multiplying a number, x, by a number 1 less
than itself is 4 less than multiplying x by itself, then x =?

x(x-1)=(x*x)-4
x^2-x=x^2-4
-x=-4
x=4

AliSyed · #**273** Thursday, September 27, 2012

Now got your question,you have missed the power sign(use shift+6 to insert power sign) in question,
If (2^x).(2^y) = 3^z , find (x + y)/z=?
solution: As bases are same so the exponents can be added together so
2^(x+y)=3^z
here 2^1.585=3 so
2^(x+y)=2^(1.585*z) Now the bases are same then exponents can be compared
x+y=1.585*z we get
(x+y)/z=1.585

dua malik · #**274** Thursday, September 27, 2012

Quote:

Originally Posted by AliSyed

Now got your question,you have missed the power sign(use shift+6 to insert power sign) in question,i request admins to delete post#273.Here is the correct question and answer
If (2^x).(2^y) = 3^z , find (x + y)/z=?
solution: As bases are same so the exponents can be added together so
2^(x+y)=3^z
here 2^1.585=3 so
2^(x+y)=2^(1.585*z) Now the bases are same then exponents can be compared
x+y=1.585*z we get
(x+y)/z=1.585

thankyou so much
still m confused about this quest solution
how v get this here 2^1.585=3 ??

AliSyed · #**275** Friday, September 28, 2012

Quote:

Originally Posted by dua malik

thankyou so much
still m confused about this quest solution
how v get this here 2^1.585=3 ??

We have to make bases equal on both side so that we can compare the exponents.In this question we have base 2 on one side and base 3 on the other side.here you have two choices either convert base 2 to base 3 or convert base 3 to base 2.i converted the base 3 to base 2 so that both bases on each side are equal.We have to find out which power of 2 gives us 3 ?
you know 2^1=2 and 2^2=4 so to make 3 ,power should be between 1 and 2.then try 2^1.5 it will b nearly equal to 3.so add some digits to 1.5 like 1.56 ,1.587 or 1.585 gives more accurate answer.if the question looks like
2^x=8^3 so here 2^x=2^(3*3) because (2^3=8)
so bases are equal now x=9, hope now you understand.

jabbiking · #**276** Friday, September 28, 2012

Plz meri koi help kare ga...mera center islamabad hai..maine khushab se ana hai..tou Islamabad Model College for Girls F-10/2 Islamabad GOLRA shareef se kareeb paray ga ya phr PIR WIDHAI se?? plz any one tel me

adrish arslan · #**277** Friday, September 28, 2012

@jabbiking
F 10/2 golra sharif sa karib para ga

zahidmahmoodbhatti · #**278** Saturday, September 29, 2012

Quote:

Originally Posted by human resource

aap ne test pehle dia thaa kia?and what about analytical portion?

main GAT A ke baat kar raha hoon us main ye he pattern hota ha ab PPL main Kai Ho ga Koi Pata Ni

Jetpack2 · #**279** Sunday, September 30, 2012

How was your test friends.

I found the test easy , except the analytical portion , personally I found analytical very tough.

and ti

me consuming.

Lets hope for the best.

raqthesolid · #**280** Sunday, September 30, 2012

Test was relly a challenge especially for those who gave CAT-A.
i failed to complete all 40 analytical questions and guessed on 22 quesitons without reading...

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