Maths : Basic Numeracy

Q 369 / 370

UPSC CSE Prelims 2011

In a survey regarding a proposal measure to be introduced, 2878 persons took part of which 1652 were males. 12 persons voted against the proposal which 796 were males. 1425 persons vote for the proposal. 196 females were undecided.
How many males were undecided?

EXPLANATION

Correct Option (a)

To determine the number of males who were undecided, the following data from the survey is utilized:

  • Total number of persons surveyed: 2878
  • Total number of males: 1652
  • Males who voted against the proposal: 796
  • Total persons who voted for the proposal: 1425
  • Females who voted for the proposal: 600

First, calculate the number of males who voted for the proposal:

Males who voted for = Total persons who voted for - Females who voted for

Males who voted for = 1425 - 600 = 825

Next, determine the number of males who were undecided by subtracting the males who voted for and the males who voted against from the total number of males:

Males who were undecided = Total males - Males who voted for - Males who voted against

Males who were undecided = 1652 - 825 - 796 = 31

Incorrect Options:

Options (b), (c), and (d) are incorrect as they do not align with the calculated number of undecided males derived from the provided survey data.