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

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

Which digit occurred maximum times between the number 1 and 1000?

what does this below rebus represent identXQQQQQME

What is red and smells like blue paint?

When can we add 2 to 11 and get 1 as the correct answer?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?