# If and A2-kA-5I2 = 0,then the value of k is

1.  3

2.  5

3.  7

4.  -7

4

5

Explanation :
No Explanation available for this question

# A letter is selected at random from word ASSISTANT and another is taken out from STATISTICS

1.  1/45

2.  13/40

3.  19/90

4.  12/90

4

19/90

Explanation :
No Explanation available for this question

# If the function (ksinx+2cosx)/(sinx+cosx) is increasing then k belongs to the interval

1.  (∝,2)

2.  (2,∝)

3.  (-2,2)

4.  IR

4

(2,∝)

Explanation :
No Explanation available for this question

# If x2+y2+z2≠0,x=cy+bz,y=az+cx,z=bx+ay then a2+b2+c2+2abc=

1.  2

2.  1

3.  a+b+c

4.  ab+bc+ca

4

1

Explanation :
No Explanation available for this question

# If V3=xyz then Vxyz=

1.  1/8V

2.  1/8V2

3.  1/27V

4.  1/27V2

4

1/27V2

Explanation :
No Explanation available for this question

# The distance ‘s’ covered by a particle moving on a straight line in ‘t’sec is given by S=2t3- 9t2+12t+6.Whe the acceleration is zero,the time is

1.  2/3 sec

2.  1/3 sec

3.  3/2 sec

4.  4/3 sec

4

3/2 sec

Explanation :
No Explanation available for this question

# (A):The equation asinx+cos2x=2a-7 possesses a solution,if a∈[2,6]. (R):-1≤sinx≤1∀x∈R

1.  Both A and R are true R is correct explanation of A.

2.  Both A and R are true R is not correct reason of A.

3.  A is true R is false.

4.  A is false R is true.

4

Both A and R are true R is correct explanation of A.

Explanation :
No Explanation available for this question

# The point on the curve y=x2+7x+2 which is closest to the line y=3x+2 is

1.  (-2,8)

2.  (-2,8)

3.  (0,2)

4.  (-4,10)

4

(-2,8)

Explanation :
No Explanation available for this question

# If xy=15,y>0 then the minimum value of 5x+12y is

1.  15

2.  20

3.  30

4.  120

4

30

Explanation :
No Explanation available for this question

# Statement I: Statement II:

1.  Only I

2.  only II

3.  both I & II

4.  neither I nor II

4