Question

Sol.
D
Example-18
it In a class test (+3) marks are given for every
at, answer and (-2) marks are given for every incon
answer and no marks for not attempting any que
7 (a) Radhika scored 20 marks. If she has got 12 con
answers, how many questions has she attempi
incorrectly? (b) Mohini scores - 5 marks in this,
though she has got 7 correct answers. How
questions has she attempted incorrectly
​

Answer 1

a) 8 incorr. ans.

b) 13 incorr. ans.