POLYCET-2021 Maths Key

1/10

The sum of 15 terms of an A.P 3,6,9,_______

1)315

2)360

3)415

4)460

2/10

The distance between two points (0,0) and (5,12) is

1)11

2)12

3)13

4)14

3/10

The centre of a circle with (1,2) and (7,-4) as end points of the diameter is

1) (-4,1)

2) (4,-1)

3) (-4,-1)

4) (4,1)

4/10

The roots of x²-x-6=0 are

1) 2,-3

2) -2,3

3) 2,3

4) -2,-3

Add

5/10

If the roots of the Quadratic equation ax²+bx+c=0 are sinα and cosα then 1+2\({c \over a}\)=_____

1) \({a²\over b²}\)

2) \({b² \over a²}\)

3) a²

4) b²

6/10

How many two digit numbers are divisible by 7

1) 10

2) 11

3) 12

4) 13

7/10

Area of the triangle formed by the line xcosα+ysinα=p with the coordinate axes is

1) \({p²\over 2sinαcosα}\)

2) \({p²\over sinαcosα}\)

3) \({p \over 2sinαcosα}\)

4) \({p \over sinαcosα}\)

8/10

If the slope of the line through (x,5) and (5,2) is 3 then the value of x is_____

1) 3

2) 4

3) 5

4) 6

9/10

If α,β are roots of a Quadratic Equation ax²+bx+c=0 then \({1 \over α}\) + \({1 \over β}\)=

1) \({-b \over a}\)

2) \({c \over a}\)

3) \({-b \over a}\)

4) \({b \over c}\)

10/10

10th term of an A.P 2,-1,-4,______is

1) -21

2) -23

3) -25

4) -27

Result: