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Type: Posts; User: likithae; Keyword(s):

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by likithae
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1
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886

### linear Equations

The sum of a two-digit number and the number obtained by reversing the digit is 66. If the digits of the number differ by 2, find the number. How many such numbers are there?

explain me how to...

by likithae
Replies
8
Views
3,859

### i think consecutive integers are...

i think consecutive integers are n,n+1,n+2.......

for example 1,2,3,.......

by likithae
Replies
4
Views
2,536

### okay.thank you,this only shortcut method or if...

okay.thank you,this only shortcut method or if any..

by likithae
Replies
8
Views
2,256

what is OA?
5. ## Thread: Find the equation of the circle..

by likithae
Replies
0
Views
1,027

### Find the equation of the circle..

If the lines 2x-3y=0 and 3x-4y=7 are two diameters of a circle of radius 7, then the equation of the circle is

(a)x^2+y^2+2x-4y-47=0
(b)x^2+y^2=49
(c)x^2+y^2-2x+2y-47=0
(d)x^2+y^2=17
6. ## Thread: Algebra, how to solve for Y!

by likithae
Replies
5
Views
823

### thank you very much. now i understood how to...

thank you very much. now i understood how to solve it.
7. ## Thread: permutations and combinations

by likithae
Replies
3
Views
803

### In terms of prime factors 100! can be written...

In terms of prime factors 100!

can be written as 2^1.3^b.5^c.7^d..........

Now, E_3(100 !)=[100/3]+[100/3^2]+[100/3^3]+[100/3^4]

=33+11+3+1=48.

Hence the...
8. ## Thread: this question is difficult for me, try to solve

by likithae
Replies
1
Views
1,874

### Hi, I thought the best ways was to assume...

Hi,

I thought the best ways was to assume values for b in the 2nd equation

Let b = -5; The equation becomes 2x^2-5x+2=0

Roots are 1/2 or 2.

Roots of 1st equation are 3/2 or 3

by likithae
Replies
1
Views
1,677

### Let the heights be 1,2,3,4,5,6 C D 6 1 A B ...

Let the heights be 1,2,3,4,5,6

C D 6
1 A B

This should be the arrangement.

Hence we are left with 4 unknown positions A,B,C,D corresponding to 2,3,4,5 (not in the same order)

Now,...
10. ## Thread: how to solve these ps question

by likithae
Replies
2
Views
766

### thank you.but the OA is 5456. help me to solve...

thank you.but the OA is 5456. help me to solve it.
11. ## Thread: how to solve these type of questions

by likithae
Replies
3
Views
1,261

### thank you very much.great. but how 7 gold coins...

thank you very much.great. but how 7 gold coins can be distributed in 3 groups. explain me clearly please.

by likithae
Replies
3
Views
792

13. ## Thread: how to solve these type of questions

by likithae
Replies
3
Views
1,261

### how to solve these type of questions

The number of ways in which 13 gold coins can be distributed among three persons such that each one gets at least two gold coins is:

(a) 6
(b) 12
(c) 24
(d) 36

by likithae
Replies
4
Views
1,075

### thank u....but please explain me the formula...

thank u....but please explain me the formula little bit clear....

by likithae
Replies
4
Views
971