Can you find a five letter word that is left with only two letters if one is removed?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

In the image given, you can find several triangles. Can you count them all?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What occurs twice in a week, once in a year but never in a day?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I