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A sheet of paper has statements numbered from 1 to 20. For all values of n from 1 to 20. Statement n says 'At least n of the statements on this sheet are false.' Which statements are true and which are false?
(a) The even numbered statements are true and the odd numbered are false.
(b) The odd numbered statements are true and the even numbered are false.
(c) The first 6 statements are true and the last 6 are false.
(d) The first 13 statements are false and the last 13 are false.

Read Solution (Total 4)

(c) The first 6 statements are true and the last 6 are false,
there is some shortcuts for this type of sums.
in this que atleast is there so ans is 1/2true &1/2 false
12 years agoHelpfull: Yes(18) No(5)

when atleast comes- 1st half s are true &last half are false
12 years agoHelpfull: Yes(8) No(1)
option c is the answer..ignore previous ans of mine
12 years agoHelpfull: Yes(2) No(1)
option d is the answer
12 years agoHelpfull: Yes(0) No(13)

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In a room (unwanted stuff) Sports readers, 10 tables, 4 chairs per table, each table has different number of people then how many tables will left without at least one person?
The dynamics of crowd behaviour are hard to study because usually people are not reliable witness of their own behaviour. Now consider 4 people standing in the queue of a supermarket. You want to predict their behaviour based on their age group. You get to know fro the supermarket records that their average age 3 years ago was 48 years. After a while, another person joins the queue and the present average of all the 5 is 46 years. The present age of the last person in the queue is:

Ans: 26 years