Que : 48. Choose the correct option and write it :

(i) HCF of (91, 21) is

(a) 91

(b) 21

(c) 13

(d) 12

Answer : Should be 7 but 7 is not in option.

 

(ii) The pair of equation x+2y+5= 0 and –3x – 6y+1 = 0 have solution –

(a) a unique solution

(b) has no solution

(c) infinitely many solution

(d) two solution

 

(iii) The sum of the zeroes of the quadratic polynomial ax² + bx + c will be –

(a) b/a

(b) a/b

(c) –b/a

(d) –c/a

 

(iv) The discriminant of the quadratic equation x² – 4x + 4 = 0 is –

(a) 4

(b) 2

(c) 0

(d) 1

 

(v) Number of tangents drawn at a point on the circle –

(a) 1

(c) 3

(b) 2

(d) 0

 

(vi) The distance between the point (0, 5) and (–5, 0) is –

(a) 5

(b) 5√2

(c) 2√5

(d) 2