Question

O is the centre of the circle, A and B are distinct points on the circle. If x and y are integers, then the
least possible value of y is:
(A) 10°
(B) 1°
(C) 20
(D) 0°
(E) Data is not sufficient​

Answer 1

Answer:

e) the data is not sufficient

Step-by-step explanation:

it can be anything more then 0 degree

(90degree - 2x)

as it is an isosceles triangle(AO=OB)

Answer 2

Answer:

(C) 2°

Step-by-step explanation:

OA=OB

it is an isosceles triangle, angle x = angle OBA

if y = 1°, then x = (180°-1°)/2 = 89.5°, which is not an integer

so the minimum angle has to be 2°, for x to be integer