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

Q). The width of the class in the distribution having class intervals 1-20, 21-40, 41-60 is
A) 19
B) 19.5
C) 20
D) 20.5

Q). The arithmetic mean of the following data is

Q). If mean = 44 and median = 42, then mode =
A) 34
B) 36
C) 38
D) 40

Q). Which of the following is more consistent?
A) AM
B) Median
C) Mode
D) None

Q). If x= then
A) x² —x + 3 = 0
B) x² + x + 3 = 0
C) x² -x -3 = 0
D) x² + x – 3 = 0

View Answer

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

Q). log₁₀125 + log₁₀8 =
A) 1
B) 2
C) 3
D) None

Q). The relation a(b + c) = ab + ac is
A) commutative law
B) associative law
C) distributive law
D) None

Q). If n is a natural number, then 8ⁿ – 3ⁿ is always divisible by
A) 3
B) 5
C) 8
D) 11

Q). If √x = 31, then x =
A) 529
B) 933
C) 729
D) 841

Q). If A and B are two sets then
(A-B) ⋂ (B-A) =
A) A
B) B
C) A△ B
D) Ø