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

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

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

It belongs to you, but other people use it more than you do. What is it?

Find the value of "?" in the ball picture Riddle below:

Can you identify if it's a murder or a suicide ?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

What begins with T, ends with T, and has T in it?