- 150
- 315
- 375
- 420
- b
-
Let Book contain=X Pages
A read 3/7 of X=(3/7)*X=3X/7
Remaining Pages=X-3X/7=(7X-3X)/7=4X/7
A read remaining Pages=3/4 of 4X/7=3/4*4X/7=12X/28
A left Pages=4X/7-12X/28=(16X-12X)/28=4X/28=X/7
Now X/7=45=
X=45*7=315
All Posts Solved Papers
The heaviest particle in atom is:
- Neutron
- Proton
- Electron
- None of these
- a
-
The lightest particle in atom is Electron.
Speed of light is:
- 200,000 Km/Sec
- 2,50,000 Km/Sec
- 300,000 Km/Sec
- 3,50,000 Km/Sec
- c
Charles Babbage is famous for his work in:
- Computer
- Psychology
- Microbiology
- Chemistry
- a
-
Charles Babbage is founder of Computer.
He invented first Mechanical Computer during 1822.
Pakistan exports cotton yarn to country:
- US
- UK
- France
- None of these
- a
Gregor Mendel is famous for:
- Anatomy Research
- Cell Theory
- Genetics
- None of these
- c
-
Gregor Mendel was an Austrian Scientist.
Equator is the one of the lines of:
- Latitude
- South Pole
- Longitude
- None of these
- a
Fear of trees is called:
- Pyrophobia
- Hydrophobia
- Ecophobia
- Dendrophobia
- d
-
Pyrophobia is fear of fire.
Hydrophobia / Aquaphobia is fear of water.
Ecophobia is fear of natural environment.
The earth is the ……..planet from the sun.
- Second
- Third
- Fourth
- Fifth
- b
-
Earth is at distance of 150 Million Km from Sun.
Percentage of Oxygen in air on Earth is:
- 21%
- 22%
- 39%
- 45%
- a
-
Oxygen 20.94%
Nitrogen 78.09%
Argon 0.93%
Carbon Dioxide 0.04%