What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Complete the table series riddle by finding the number that can replace "??".

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

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

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

What is full of holes but still holds water?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

Can you write down eight eights so that they add up to one thousand?

Prove that the below maths equation is true.

8 + 8 = 91

What is wrong in the below Picture?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?