How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

How do you go from 98 to 720 using just one letter?

Which number should replace the question mark?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I have an eye but still cannot see.

Who am I?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"