TS Polycet (Polytechnic) 2017 Previous Question Paper with Answers And Model Papers With Complete Analysis

Q). =
A) 1
B) 2
C) 3
D) 4

View Answer

C) 3
Explanation: x =
⇒ x=
x² = 6 + x ⇒ x²-x-6 = 0
x² – 3x + 2x – 6 = 0
x(x-3) + 2(x-3) = 0
⇒ (x-3) (x + 2) = 0
X = 3 (or) x
= -2

Q). If = 2, then =
A) 0
B) 2
C) 4
D) 8

View Answer

B) 2
Explanation: = 2
⇒(x+1/x)² = (2)²
+2. = 4
+2=4
⇒
= 4-2
=2

Q). The discriminant of the quadratic equation x² + bx + c = 0 is
A) b² – 4ac
B) a² – 4bc
C) c² – 4ab
D) None

Q). If α, β are the roots of x²+ 2x + 5 = 0 then =
A) 6/5
B) 4/5
C) -6/5
D) -4/5

View Answer

C) -6/5
Explanation: a=1,b = 2,c = 5
α+β = -b/a =-2
αβ = c/a = 5

= α²+β²/ αβ
=
=
=
=-6/5

Q). Which is the three digit number divisible by 7?
A) 100
B) 133
C) 137
D) 143

Q). The 6^th term in the GP 2, 8, 32,…………. is
A) 512
B) 128
C) 2048
D) 256

Q). 1 + 1 + 1 +…………… n terms =
A) n/2
B)
C) n
D)

Q). 1 + 3 + 6 + 10 +…………….. n terms =
A)
B)
C)
D) None

View Answer

C)

Q). If (k, 2) lies in II quadrant then (-k, -2) lies in the quadrant
A) I
B) II
C) III
D) IV

Q). The point of intersection of the lines 2x + 3y – 5 = 0 and 3x – 4y + 1 = 0 lies in which quadrant?
A) I
B) II
C) III
D) IV