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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?

Solution (i) Mohan gets four correct and six incorrect answers. What is his score? From the given details we get to know that Marks... View Article

Solution From the given data we get to know that Initial temperature = 40°C Change in temperature per hour = −5°C Change in... View Article

(–57) × (–19) + 57 Solution:- The given equation is in the form of the Distributive law of Multiplication over Addition. = a... View Article

(–17) × (–29) Solution:- The given equation is in the form of the Distributive law of Multiplication over Addition. = a... View Article

7 × (50 – 2) Solution:- The given equation is in the form of Distributive law of Multiplication over Subtraction. = a × (b... View Article

625 × (–35) + (– 625) × 65 Solution:- The given equation is in the form of the Distributive law of Multiplication over... View Article

(– 41) × 102 Solution:- The given equation is in the form of the Distributive law of Multiplication over Addition. = a × (b... View Article

15 × (–25) × (– 4) × (–10) Solution:- The given equation is in the form of the Commutative law of... View Article

8 × 53 × (–125) Solution:- The given equation is in the form of the Commutative law of Multiplication. = a × b =... View Article

26 × (– 48) + (– 48) × (–36) Solution:- The given equation is in the form of the Distributive Law of... View Article

Solution On multiplying -22 with (-1), we get = -22 × (-1) = 22 O multiplication of an integer -22 with -1, then we get the additive... View Article

Solution From the given data On considering the Left Hand Side (LHS) first = (–21) × [(– 4) + (– 6)] = (-21) ×... View Article

Solution From the given data On considering the Left Hand Side (LHS) first = 18 × [7 + (–3)] = 18 × [7 – 3] = 18... View Article

Solution [(–3) × (–6)] × [(–2) × (–1)] By the rule of Multiplication of integers, =... View Article

Solution [(–1) × (–2)] × [(–3) × 4] By the rule of Multiplication of integers, = [(–1) ×... View Article

Solution (-18) × (-5) × (-4) By the rule of Multiplication of integers, = (-18) × (-5) × (-4) First multiply the two... View Article

Solution 9 × (-3) × (-6) By the rule of Multiplication of integers, = 9 × (-3) × (-6) First multiply the two... View Article

Solution (–12) × (-11) × (10) By the rule of Multiplication of integers, = (–12) × (-11) × (10)... View Article

Solution (–15) × 0 × (–18) By the rule of Multiplication of integers, = (–15) × 0 × (–18) = 0... View Article

Solution (-316) × (-1) By the rule of Multiplication of integers, = (-316) × (-1) = 316 … [∵ (- × – = +)]... View Article