- Nitrogen
- Helium
- Hydrogen
- Hydrogen sulphide
- 2
- 4
- 6
- 8
- Arachnology
- Serology
- Gerontology
- None of these
- 37
- 37.8
- 39
- 39.8
Solution:
Prime Number between 30 to 50 = 31, 37, 41, 43, 47
Sum of prime number = 31 + 37 + 41 + 43 + 47 = 199
Average = 199/5
= 39.8
- Hardworking
- Witty
- Deliberate
- Lazy
- Artisans
- Artists
- Artiste
- Soldiers
- To make peace
- To make a foolish choice
- To make a wrong decision
- To lose something important
- Bird: Worm
- Dog: Cat
- Fox: Poultry
- Hen: Chick