Tick the correct option in the following multiple choice questions.
i) The angles of a quadrilateral are in ratio 2:3:5:8. The smallest angle is:
a) 60 b) 40 c) 20 d) 50
ii) Which of the following rational number is in standard form:
a)-14/30 b) 6/-7 c) -39/125 d) -21/78
iii) When a certain number is added to the numerator of 9/17. the new
fraction is 5/7. The number is :
a)10 b) 9 c) 11 d) (-1)
iv) A boy gets 3 marks for each correct sum and loses 2 marks for each
incorrect sum. He does 24 sums and obtained 37 marks. The number of
correct sums were :
a)20 b)17 c)31 d)19