Questions

There are 60 minutes in an hour.

In ¾ of an hour there are (60 × ¾) minutes = 45 minutes.

In ¾ of an hour there are (60 × 45) seconds = 2700 seconds.

Siren sounds for every 5 seconds.

In 2700 seconds = 2700/5 = 540 times.

The count start after the first sound, the Siren will sound 541 times in ¾ of an hour.

The Sumerians were the first to evolve a proper system of writing called cuneiform. The script is wedge-shaped. Henry Rawlinson a British officer, deciphered the cuneiform script. He discovered by chance an inscription known as the behistun inscription. Relentless work of almost 12 years by Henry Rawlinson on this inscription, he managed to decipher the cuneiform script.

Now a days, printers we are using are called as laser printers. The speed of a laser printer is measured in PPM i.e, Pages Per Minute. 

Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image.

Compared to inkjet printers which use ink for printing laser printers are more expensive as they use toner which lasts for long.

Culture is the social behavior and norms found in human societies. The 7 main elements that make up culture are ::

1. Social organization
- the family patterns and social classes of a culture.

2. Customs and traditions
- way people act, wear, what they eat, and their laws.

3. Language
- communication by word of mouth.

4. Religion
- a system of beliefs that answers questions about the meaning of life.

5. Art and literature
- ways the people entertain themselves. There stories they tell and how they dance. Its also the music they listen to and there artwork.

6. Forms of government
- the people or group(s) that control the people and provide/ enforce the laws.

7. Economic systems
- the method used by a society to produce and distribute goods and services.

India's largest cab aggregator Ola has partnered with Bharti Airtel to launch a range of integrated digital offerings to customers.

 As part of the partnership, Ola will integrate Airtel Payments bank to its app and Airtel will integrate Ola's mobile wallet Ola Money as a payment solution on Airtel website and MyAirtel app for mobile recharges and bill payments.

The artificial kidney is the dialysis machine. Blood from the body is fed into the machine which removes nitrogenous wastes like urea and returns the blood back to the body.People with renal failure have to use this machine.