• Placement Questions
• /
• Self

self Math Questions and Answer Page 318

(#M40001953) SELF QUESTION crossing bridge Keep an EYE

A bridge will collapse in 17 minutes. 4 people want to cross it before it collapses. It is a dark night and there is only one torch between them. Only two people can cross at a time. "A" takes 1 minute to cross, "B" takes 2 minutes, "C" takes 5 and "D" takes 10 minutes. How do they all cross before the bridge collapses?

sumit (14 years ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (8)   (2) Submit Your Solution

(#M40001951) SELF QUESTION Keep an EYE

Fresh grapes contain 90% water when they are dried they turn into resins containing 20% water . Find how many kg of resins can be obtained from 20kg of fresh grapes

Aparajita Chowdhury (14 years ago)

Unsolved Read Solution (4)

Is this Puzzle helpful?   (8)   (0) Submit Your Solution

(#M40001845) SELF QUESTION arrangements Keep an EYE

how many 4 digit numbers which are greater than 3000 can be generated by using 4,4,4,4,3,3,3,2,2

swetha (14 years ago)

Unsolved Read Solution (1)

Is this Puzzle helpful?   (5)   (1) Submit Your Solution

(#M40001830) SELF QUESTION asked in cts Keep an EYE

A secret can be told only 2 persons in 5 minutes .the same person tells to 2 more persons and so on . How long will take to tell it to 768 persons ?

Solution

at start one person will tell to 2 persons, it will take 5 min, now that 1+2 = 3 persons will tell this to next 6 persons, then 1+2+6 = 9 persons will tell to next 18 persons, then 1+2+6+18 = 27 persons to 54 similarly 1+2+6+18+54 = 81 persons will tell this to 162 persons similarly 1+2+6+18+54+162 = 243 persons will tell this to 486 persons, upto this step total persons who have listened this secret = 2+6+18+54+162+486 = 728, and total time taken upto this step = 5*6 = 30 min, now next 5 min will be sufficient to tell this message to next 40 persons so total time taken = 35 min

Like manish sir answer on facebook.

Kumar (14 years ago)

Solved Read Solution (3)

Is this Puzzle helpful?   (11)   (7) Submit Your Solution

(#M40001775) SELF QUESTION Naveen Joshi12 December 2010 Keep an EYE

A shop sells chocolates at re.1 each. U can exchange 3 wrappers for 1 chocolate. If u have Rs.100, how many chocolates can you totally get?

Aashu (14 years ago)

Solved reya Read Solution (6)

Is this Puzzle helpful?   (22)   (7) Submit Your Solution

(#M40001774) SELF QUESTION Gouri Shanker Poised26 December 2010 Keep an EYE

1)There are 3 piles of books on the table you need to arrange them in the self such that 1st book of each pile gets placed on the self,what is the possible no of arrangements:
a)12! b)12C3 * 9C4 c)12^12 d)none

Aashu (14 years ago)

Unsolved Read Solution (2)

Is this Puzzle helpful?   (27)   (23) Submit Your Solution Permutation and Combination

(#M40001783) SELF QUESTION Keep an EYE

.If x=y=2z and xyz=256 then what is the value of x?

Kumar (14 years ago)

Unsolved Read Solution (6)

Is this Puzzle helpful?   (20)   (5) Submit Your Solution

(#M40001782) SELF QUESTION Keep an EYE

a farmer took a basket of eggs to town.he sold 1/3 of the eggs at one store.then he sold 2/3 of the remaining in another store.then he found that he has two dozens eggs left.how many eggs did he have at the beaginning?

reya (14 years ago)

Unsolved Read Solution (4)

Is this Puzzle helpful?   (0)   (0) Submit Your Solution

(#M40001781) SELF QUESTION slug it out Keep an EYE

one day a slug fell into a hole that was 19 feet deep.each day he climbed up 4 feet.at night he slid back 2 feet.how many days did it take him to climb out of the hole?

reya (14 years ago)

Unsolved Read Solution (5)

Is this Puzzle helpful?   (4)   (1) Submit Your Solution

(#M40001780) SELF QUESTION moving escalator Keep an EYE

if it takes divyanshu 2 minutes to walk up a moving escalator in the same direction as the escalator,but 6 minutes-at the very same pace-down the escalator ,how much faster than the escalator is divyanshu walking?

reya (14 years ago)

Unsolved Read Solution (3)

Is this Puzzle helpful?   (0)   (0) Submit Your Solution