#### The number of red blood cells per cubic millimetre of blood is approximately 5.5 million. If the average body contains 5 litres of blood, what is the total number of red cell in the body? (1 litre = 1,00,000 mm^{3})

**Solution:**

#### Mass of Mars is 6.42 × 10^{29} kg and the mass of the sun is 1.99 × 10^{30} kg. What is the total mass?

**Solution:**

#### A particular star is at a distance of about 8.1 × 10^{13} km from the Earth. Assuming that the light travels at 3 × 10^{8} m/sec, find how long does light take from that star to reach the Earth.

**Solution:**

**More Solutions:**

- Simplify and write in exponential form with negative exponent
- Simplify (49 x z^-3 / 7^-3 x10 x z^-5) z not equals 0
- Find the value of m for which 9^m div 3^-2 = 9^4
- Find ‘x’ if (-2/3)^-13 * (3/-2)^8 = (-2/3)^-2x+1
- Express the following numbers in standard form
- Express the number appearing in the following statements in standard form
- Compare the following