i just tried to solve it all over again and realised that E is the answer..please correct me if i am wrong. ways to divide a team of 6 students into 3 groups of 2 each = 6!/ (2!)^3 = 90 and now they can be assigned to 3 different topics in 3! ways. Therefore the total number of arrangements = 90 * 3...

Square root and inequalities!!

What is the value of x, if x is an integer? 1.) [(x+4)*(x-5)]^1/2 < 11 2.) [(x+4)*(x-5)]^1/2 > 10 OA is [/spoiler]C[spoiler] please tell 1.)whether we can square both the sides of an equality as in the question above?? 2.) can we take square root on both the sides of inequalities eg. X^2 < 4 ??

Number Properties- divisibility

Is the positive integer n divisible by 18?

1.) n^2 is divisible by 18
2.) 2n is divisible by 18

OA is C

please explain!!

Inequalities!!

If x/y >2, is 3x+2y<18?

1. x-y is less than 2
2. y-x is less than 2


how do i attack this!!

also whats the rule for adding and substracting two inequalities!!

OA is A

Co-Ordinate Geomtery - Parabola!!

If the graph represented by f(x) = ax^2 + bx + c passes through (-1,0) and (3,0) , is f(5) > 0?

1.) the y-intercept is 3
2.) f(-4) < f(-3)

please explain how to crack this DS...stcuk on St2.

OA is D

@ harsh...i too feel the st1 is insufficient!!
st2 is sufficient

@ girish....for me the OA should be B!!

someone can u please diagnose the this particular DS ;)

Co-ordinate Geometry~~

line m and n pass through point (1,2). Is the slope of m greater than the slope of n?

1.) the x-intercept of m is greater than 1 and that of n is less than 1

2.) the y-intercept of m = 4 and that of n = (-2)

OA is D

kindly explains to solve st1 algebraically!!

The Values of five numbers are 10,20 or 30 repectively. What is the average of 5 numbers? 1.) 4 numbers are less than 30 2.) 2 numbers are greater than or equal to 20 please explain the reasoning!! OA is C Shouldnt it be values of three no.s are 10,20 and 30 rather than for 5 no.s Also,it is writte...