Number System

[rajat_nda]

bingo sid !!

beautiful approach...and to think this thread has been dead from d time i posted d question....
infact this is a better approaach then the one i posted
as it is the partition method is rather hermetic....
newayz good going


ciao

[anil_sharma]

Originally Posted by sidbadshah

Hi Rajat

Shall try to elaborate
Now say we have to put the third flag....
case1: When both the prev. flags(f1,f2) were on the same mast. Say f1 was below f2.
Now the third flag can either go
a) below f1
b) between f1 and f2
c) above f2
d) 2nd mast
e) third mast

which totals to 5 ways

case 2: When both the flags (f1,f2) are on different masts
Now the third flag can go
a) below f1
b) above f1
c) below f2
d) above f2
e) the third mast

which totals to 5 ways again

I hope U get the point

Sid

I think answer is 135.

case 1. If only one flag is used: 5c1*3c1 =15
case 2. If only two flags are used: 5c2*3p2 =60
case 3. If three flags is used: 5c3*3p3 =60

Hence answer is 15+60+60+15 = 135

[IdiotR]

One small question from my side:
How many 3 digit numbers are there which are neither divisible by 2 nor 3

[chetna]

Originally Posted by IdiotR

One small question from my side:
How many 3 digit numbers are there which are neither divisible by 2 nor 3

3 digits numbers divisible by 2 and 3=600...

Later edited:-

digit numbers are there which are neither divisible by 2 nor 3=900-600=300....

[nagi_nov3]

Originally Posted by chetna

3 digits numbers divisible by 2 and 3=600...

Later edited:-

digit numbers are there which are neither divisible by 2 nor 3=900-600=300....

this is just like P(2)+p(3)-p(6)

so p(2) = 500 - 50 (0 to 1000 - 0 to 100)
p(3) = 333 - 33 (0 to 1000 - 0 to 100)
p(6) = 166-15

= 450+300-150
=600

so those are not divisible will be 900 - 600 = 300

[RyanS]

Originally Posted by srin017

Hi,
I m a newbie just started working in CAT '06.

I am finding difficult in finding answers to the following questions.

Please kindly help me...

1. If 146! is divisible by 5^n, then find the maximum value of n.?

a. 34 b. 35 c. 36 d. 37

2. The sides of the pentagonal field are 1737 m, 2160 m, 2358 m, 1422 m, 2214 m respectively..
Find the greatest length of tape by which the five sides may be measured completely?

a. 7 b. 13 c. 11 d. 9

3. A milkman has three different qualities of milk. 403 gallons of 1st quality, 465 gallons of 2nd quality, 496 gallons of 3rd quality. find the least possible number of bottles of equal size in which different milk of different qualities can be filled without mixing.?

a. 34 b. 46 c 26 d. 44

4. What is the greatest number of 4 digits that when divided by any of the numbers 6, 9, 12, 17 leaves a remainder of 1?

a. 9997 b. 9793 c. 9895 d. 9487




Life is like having a cup of tea. You sit by the side of the window, lift the cup and take a careless sip, only to realize, somebody forgot to put the sugar. Too lazy to go for it you somehow struggle through the sugarless cup.
Till you discover undissolved sugar crystal sitting at the bottom...

Srinivas
---That's LIFE

Dude check Arun Sharma's book for Quant - its all dicsused there!

[IdiotR]

Originally Posted by nagi_nov3

this is just like P(2)+p(3)-p(6)

so p(2) = 500 - 50 (0 to 1000 - 0 to 100)
p(3) = 333 - 33 (0 to 1000 - 0 to 100)
p(6) = 166-15

= 450+300-150
=600

so those are not divisible will be 900 - 600 = 300

yes i think this is the way of doin ths,now another small Qs

If the difference between HCF and LCM of two numbers a and b is 57,what is the min val of a+b?

[nagi_nov3]

Originally Posted by IdiotR

yes i think this is the way of doin ths,now another small Qs

If the difference between HCF and LCM of two numbers a and b is 57,what is the min val of a+b?

i guess the numbers may be 58 and 1 so sum least possible would be 59

[IdiotR]

Originally Posted by nagi_nov3

i guess the numbers may be 58 and 1 so sum least possible would be 59

u r wrong,dig a bit more

27 is the answer and darkness is right

[neerajmadan2001]

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