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By using the numbers 8,5 1 and 1 exactly once and with the help of basic operation (+, -, /, *), Can you form an expression with a value of 10?

Note: Parentheses are allowed

Note: Parentheses are allowed

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Four friends need to cross a dangerous bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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Find the missing year in the series below?

1997 1999 ? 2011 2017 2027

1997 1999 ? 2011 2017 2027

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Dean Sam and Castiel are three brothers.

Interestingly their current age is prime.

What's more interesting that difference between their ages is also prime.

How old are they ?

Interestingly their current age is prime.

What's more interesting that difference between their ages is also prime.

How old are they ?

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A bank customer had Rs.100 in his account. He then made 6 withdrawals, totaling Rs.. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left

Rs.50 Rs.50

Rs.25 Rs.25

Rs.10 Rs.15

Rs.8 Rs.7

Rs.5 Rs.2

Rs.2 Rs.0

Rs.100 Rs.99

Why are the Totals not exactly right ?

Withdrawals Balance left

Rs.50 Rs.50

Rs.25 Rs.25

Rs.10 Rs.15

Rs.8 Rs.7

Rs.5 Rs.2

Rs.2 Rs.0

Rs.100 Rs.99

Why are the Totals not exactly right ?

Difficulty Popularity

Find three magic number such that ?

* Product of three numbers is prime.

* 2nd number - 1st number = 3rd number - 2nd number

* Product of three numbers is prime.

* 2nd number - 1st number = 3rd number - 2nd number

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You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

How would you measure exactly 4 ml in least number of steps ?

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1 pound = 100 penny

= 10 penny x 10 penny

= 1/10 pound x 1/10 pound

= 1/100 pound

= 1 penny

=> 1 pound = 1 penny

Solve this math trick question ?

= 10 penny x 10 penny

= 1/10 pound x 1/10 pound

= 1/100 pound

= 1 penny

=> 1 pound = 1 penny

Solve this math trick question ?

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Difficulty Popularity

Dr. Watson has a new card puzzle for Sherlock Holmes. He picks four cards out of the pack of 52 cards and lays them face down on the table. He offers four hints to Sherlock.

1) The left card can’t be greater than the one on right.

2) The difference between the first card and third card equals to eight.

3) None of the Ace is present

4) No face card has been included i.e. no queen king and jacks.

5) The difference between the second and fourth card is 7.

Sherlock smiles and tells all the four cards to Dr. Watson.

Can you tell the four cards?
**category** :
LOGIC

1) The left card can’t be greater than the one on right.

2) The difference between the first card and third card equals to eight.

3) None of the Ace is present

4) No face card has been included i.e. no queen king and jacks.

5) The difference between the second and fourth card is 7.

Sherlock smiles and tells all the four cards to Dr. Watson.

Can you tell the four cards?

Difficulty Popularity

A square island comprised of a square castle. A 14m wide trench surrounded the island from everywhere. Roman Empire wanted to invade the castle and gain the loot as well as possession of the island. They brought along wooden planks to cross the trench. However, they realized that the planks were just 13m long.

How did they use those planks to invade as well as capture the island ?
**category** :
LOGIC

How did they use those planks to invade as well as capture the island ?

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