I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Can you find the thief by just looking at the picture below?

The cream is heavier than Milk. True or False?

I look at you, you look at me, I raise my right, you raise your left. What am I?

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

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M