HSSC TGT Maths Date 30/4/2023 Morning ShiftTotal Questions: 10051. If A and B are square matrices of the same order, then (A+B)(A-B) =(a) A² - B²(b) A² - B² + BA - AB(c) A² - BA - AB - B(d) A² + B² - BA + AB(e) UnattemptedCorrect Answer: (b) A² - B² + BA - AB52. A group consists of 4 girls and 7 boys. The number of ways a team of 5 members can be selected if the team has no girls is:(a) 42(b) 35(c) 21(d) None of these(e) UnattemptedCorrect Answer: (c) 2153. If |a| and |b|, then (a + b).(a - b) =(a) Positive(b) Zero(c) Negative(d) None of these(e) UnattemptedCorrect Answer: (b) Zero54. The variance of the first n natural numbers is:(a) n²-1/12(b) n²+1/12(c) n(n²-1)/12(d) n(n²+1)/12(e) UnattemptedCorrect Answer: (a) n²-1/1255. The perpendicular distance of the point (6, 5, 8) from the y-axis is:(a) 5 units(b) 8 units(c) 6 units(d) 10 units(e) UnattemptedCorrect Answer: (d) 10 units56. The range of the function f(x) = x² + 2, x ∈ R is:(a) (2, 0)(b) (-∞, ∞)(c) (2, ∞)(d) None of these(e) UnattemptedCorrect Answer: (b) (-∞, ∞)57. The value of :(a) 5 π/2(b) π(c) 0(d) 2π(e) UnattemptedCorrect Answer: (c) 058. lim 1 - cos x / x² =(a) 1(b) 1/2(c) 0(d) 1(e) UnattemptedCorrect Answer: (b) 1/259. A card is selected randomly from a pack of 52 cards. The probability that the card is an ace of spades is:(a) 1/52(b) 1/2(c) 1/3(d) None of these(e) UnattemptedCorrect Answer: (a) 1/5260. The locus represented by xy + yz = 0 is:(a) A pair of perpendicular lines(b) A pair of parallel planes(c) A pair of parallel lines(d) A pair of perpendicular planes(e) UnattemptedCorrect Answer: (d) A pair of perpendicular planesSubmit Quiz« Previous12345678910Next »
