Read following table Answer the questions below.
Amar, Babu, Cera and Diya were asked to solve a question paper with 4 multiple choice questions with choices 1,2,3,4. The answer sheet as marked by them is reproduced here.
Babu got all answers wrong. Amar s first two answers were definitely wrong. Diya got two answers right but her fourth answer was definitely wrong. Amar and Cera each have got only one correct answer.
Which of Cera's question is correct?
Which two answers of Diya is correct?
Whose answer to Q4 is correct?
For the following questions answer them individually
The mean of the data 1, 2, 10, 18, 3, 17, 19 is
Find the factors of $$(x^2 + x - 42)$$