Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

People make me, save me, change me, raise me. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?