Mathematics Section
56. HCF of 8, 9 and 25 is
(a) 8
(b) 9
(c) 25
(d) 1
57. Question: The product of a rational and irrational number is.
(a) rational
(b) irrational
(c) both of above
(d) none of above
Explanation:
- Question: If one zero of the quadratic polynomial x2+3x+k is 2, then the value of k is.
(a) 10
(b) -10
(c) 5
(d) -5
- Explanation:
59. Question: If one of the zeroes of the cubic polynomial x3+ax2+bx+c is -1, then the product of the other two zeroes is.
(a) b-a+1
(b) b-a-1
(c) a-b+1
(d) a-b-1
- Explanation:
60. Question: Half the perimeter of a rectangular room is 46 m, and its length is 6 m more than its breadth. What is the length and breadth of the room?
(a) 2m, 20m
(b) 2m, 3m
(c) 56m, 40m
(d) 26m, 20m
- Explanation: