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प्रश्न
Find the product, using suitable properties:
7 × (50 − 2)
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उत्तर
7 × (50 − 2)
= (7 × 50) − (7 × 2) a × (b − c) = (a × b) − (a × c)
= 350 − 14
= 336
संबंधित प्रश्न
Find the product, using suitable properties:
(− 57) × (− 19) + 57
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.
Mohan gets four correct and six incorrect answers. What is his score?
Find the following products: (– 18) × (– 10) × 9
Find 16 × 12.
Find (– 23) × 48
Find (– 35) × (– 98).
Find 52 × (– 8) + (–52) × 2
If * is an operation such that for integers a and b we have a * b = a × b + (a × a + b × b) then find (–6) * 2
In a test, +3 marks are given for every correct answer and –1 mark are given for every incorrect answer. Sona attempted all the questions and scored +20 marks though she got 10 correct answers.
- How many incorrect answers has she attempted?
- How many questions were given in the test?
In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and –2 for every incorrect answer and 0 for not supplying any answer. If Yash secured 94 marks in a test, what are the possibilities of his marking correct or wrong answer?
