5
Q:

Puzzle : Bridge Crossing 

Additional Details

Jim, Jeanne, Louis and Anne wants to cross the bridge at night. They have only one torch light with them. Only two can cross the bridge at a time. They need torch light to cross the bridge. Each of them walks at a different speed. Jim needs 1 minute, Jeanne needs 2 minutes, Louis needs 5 minutes and Anne needs 10 minutes. A pair must walk together at the rate of the slower person. How these people can cross the bridge within 17 minutes?

 

Answer:



Q:

Crack the Logical #MathPuzzle?

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Answer

From given data,


Rs. 1 = 40 strawberries => Rs. 2 = 80 strawberries


Rs. 5  = 1 apple => Rs. 95 = 19 apple.


Rs. 3 = 1 mango => Rs. 3 = 1, mango


Now, Total So 100 Rs = 100 Fruits.

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3 45
Q:

Solve the MathPuzzle Challenge ?

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A) 4! B) 5!
C) 6! D) Can't be determined
 
Answer & Explanation Answer: D) Can't be determined

Explanation:

NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions.

And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions.

Therefore, Can't be determined.

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7 455
Q:

What is the Probability of all cars not clashing each other ?

triangular1504515041.jpg image

A) 1/8 B) 0
C) 1/4 D) 1
 
Answer & Explanation Answer: C) 1/4

Explanation:

Non collision can happen only when all the cars move in same direction.

That is either all cars moving in clockwise direction or all cars moving in anti clockwise direction.
P(all cars not colliding)

= P(all cars moving in the same direction)

= P(all cars moving in clockwise direction)  +  P(all cars moving in anticlockwise direction)

= [p(A --> C) x p(C --> B) x p(B --> A)]  +  [p(A --> B) x p(B --> C) x p(C --> A)]

= [1/2 x 1/2 x 1/2] + [1/2 x 1/2 x 1/2]

= 1/8 + 1/8

= 1/4

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8 1234
Q:

Find the ODD number ?

odd1502270940.jpg image

A) 42 B) 142
C) 119 D) 21
 
Answer & Explanation Answer: B) 142

Explanation:

Except 142 all are divisible by number '7'.

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5 347
Q:

Can you Solve the Problem ?

SOLVE1500443612.jpg image

Answer

Let the two digits be x & y


From given data in the question, we get


x + y = 3(x - y)


x + y = 3x - 3y


=> 2x = 4y


x/y = 2/1


For having the 2:1, numbers satisfying are


12, 21, 24, 42, 36, 63, 48, 84


From this 36 is eleminated because it is a perfect square and no others are prime or perfect squares.


Hence, there exists 7 such 2-digit numbers => 12, 21, 24, 42, 63, 48, 84.

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7 409