Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Find out the missing number in the picture attached:

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

Four people need to cross a rickety 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?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

What number should come in place of the question mark below?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

what's the probability of getting a king or a queen from a pack of 52 cards?

Bopanna was working on a murder case when he received a message about the location of the murder weapon.
The message was encrypted as below.

"deb mitciv eht edisni neddih si nopaew redrum ehT"

Tell me the location of the murder weapon.

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?