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Doubts on PS and DS

This topic has 0 member replies
sidd_k Newbie | Next Rank: 10 Posts Default Avatar
Joined
07 May 2007
Posted:
1 messages

Doubts on Problem Solving and DataSufficiency.

Post Mon May 07, 2007 12:47 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    If K is a positive integer less than 10 and N = 4,321 + K, what is the value of K?
    (1) N is divisible by 3.
    (2) N is divisible by 7.
    How to solve the above problem?Problems like these become a nuisance to me as we have many number of values of K and to find the same withing one shot becomes difficult.Please tell me a shorcut method or if anyone has concepts confined to similar problem, I would be grateful.

    A ScrewDriver and hammer curently have the same price.If the price of the screwdriver rised by 5% and the hammer rises by 3% how much more willit cost to buy 3 screwdrivers and 3 hammers.
    Answer is 4%
    How this problem can be solved?

    Is the Integer K an odd integer
    K=3M where M is an integer
    K=6J where J is an integer
    How to solve the above problem?
    As M can have any number of values and also J , how to calculate throught to come to conclusion.Any concepts for similar kind of problems.

    If x is a two digit number( so x= ba with b and a digits) what is the last digit a of x
    (1)The number 3x is a three digit number whose last digit is a.
    (2)The digit a is less than 7
    Answer is both are insufficient.How?

    If m is an integer, is m odd
    (1) m/2 is not an even integer
    (2)m-3 s an even integer
    How to judge for above problem

    is |x| = y-z
    (1) x+y = z
    (2) x<0

    what will be the answer

    If x<0, is y>0
    (1) x/y < 0
    (2) y-x>0

    What is the tens digt of positive integer x
    (1) x divided by 100 has a remainder of 30
    (2) x divided by 110 has a remander of 30

    If n is a positive integer,is the value of b-a at least twice the value of 3^n - 2^n
    (1) a = 2^n+1 and b=3^n+1
    (2) n =3

    Guys I am facing a problem in DS for the problems with unknown terms.If anyone has a a book explaining concept on the same please forward it.
    Thanks
    Siddharth Kulkarni.

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