In a class test containing 10 questions, 5 marks are awarded for every correct answer and (- 2) marks are awarded for every incorrect answer and 0 for questions not attempted.
(i) Mohan gets four correct and six incorrect answers. What is his score?
(ii) Reshma gets five correct answers and five incorrect answers. What is her score?
(iii) Heena gets two correct and five incorrect answers out of seven questions she attempts. What is her score?

Write five pairs of integers (a, b) such that a \(\div\) b = - 3. One such pair is (6, - 2) as 6 \(\div\) (-2) = (-3).

In a class test, (+ 3) marks are given for every correct answer and (- 2) marks are given for every incorrect answer and no marks for not attempting any question.
(i) Radhika scored 20 marks. if she has got 12 correct answers, how many questions has she attempted incorrectly?
(ii) Mohini scores (-5) marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?

Write two integers which are smaller than -5 but their difference is -5.

Write two integers, which are greater than -4, but their difference is smaller than -2.

The highest point measured above sea level is the summit of Mt. Everest, which is 8848 m above sea level and the lowest point is challenger deep at the bottom of Mariana Trench, which is 10911 m below sea level. What is the vertical distance between these two points?

Suppose we represent the distance above the ground by a positive integer and that below the ground by a negative integer, then answer the following:
(i) An elevator descends into a mine shaft at the rate of 5 m/min. What will be its position after one hour?
(ii) If it begins to descend from 15 m above the ground, what will be its position after 45 min?

Taking today as zero on the number line, if the day before yesterday is 17 January, what is the date 3 days after tomorrow?

If * is an operation such that for integers a and b, we have a * b = a \(\times\) b + (a \(\times\)a + b \(\times\) b). then find
(i) (-3) * (-5)
(ii) (-6) * 2

Find 4 x (- 8), 8 x (- 2), 3 x (- 7), 10 x (- 1) using number line.