Which is the biggest stadium in the world?

1. What did mathematician John Napier invent?
Algebra
Arithmetics
Logarithms
Algorithm

Ans: Logarithms

2. Which is the biggest stadium in the world?
Rungnado May Day Stadium
Strahov Stadium
Estadio Azteca
Beaver Stadium

Ans: Rungnado May Day Stadium

3. 0.07 should be written as ____ in fraction form.
70/100
17/100
7/100
7/1000

Ans: 7/100

4. What if 3/8 is reduced by 1/16?
5/16
7/16
10/13
9/16

Ans: 5/16

5. Which oil is used to preserve timber?
Lube oil
Creosotex
Olive
Crude

Ans: Creosotex

6. Find the base if the rate=2.5% and percentage=225.
9000
900
8000
800

Ans: 9000