CAT Questions

---

let x be the correct answer and y be the wrong answer
so the total number of questions is (x + y) = 150.....(1)
=> 4x - 2y = 420.....(2)
By solving (1) & (2), we get
=> 6x = 720
hence x = 120
Therefore, number of correct answers are 120.

Polygenic inheritance involves the determination of a particular phenotypic characteristic by many genes, called polygenes(group of genes influencing a quantitative characteristic), each having a small effect individually.

Height and skin colour in humans are examples of Polygenic characters.

Manas National Park or Manas Wildlife Sanctuary is a national park, UNESCO Natural World Heritage site in Assam is known for Elephants. It is located in the Himalayan foothills.

Rishikesh is a city in India’s northern state of Uttarakhand. As the city is renowned as a center for studying yoga and meditation it is called as Yoga city in India.

In the early 1950s two scientists, Rosalind Franklin and Maurice Wilkins, studied DNA using x-rays. Franklin produced an x-ray photograph that allowed two other researchers, James Watson and Francis Crick to work out the 3D structure of DNA. The structure of DNA was found to be a double helix.

The founder of Arya Samaj, Swami Dayananda Saraswati gave the motto "Go Back to Vedas" to propagate the true knowledge of Vedas.

Dairy products like milk, cheese and yogurt are rich source of protein as well as calcium also. 

Multiplicative inverse is nothing but a reciprocal of a number. 

It is defined as one of a pair of numbers that when multiplied with another number equals the number 1.

Multiplicative inverse or reciprocal of 7 is 

7 x n = 1

=> n = 1/7.

Hence, Multiplicative inverse or reciprocal of 7 is  1/7.