Advertisements
Advertisements
प्रश्न
Find the product, using suitable properties:
8 × 53 × (−125)
Advertisements
उत्तर
8 ×53 × (−125) = 8 × [53 × (−125)]
= 8 × [(−125) × 53] (b × a = a × b)
= [8 × (−125)] ×53 a × (b × c) = (a × b) × c
= [−1000] × 53 = −53000
संबंधित प्रश्न
Find the product, using suitable properties:
625 × (− 35) + (− 625) × 65
Find the product, using suitable properties:
(− 57) × (− 19) + 57
Find the following product: (– 25) × 37 × 4
Find the following products: (– 18) × (– 10) × 9
Find the following products: (– 20) × (– 2) × (– 5) × 7
Find (– 23) × 48
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
The given table shows the freezing points in °F of different gases at sea level. Convert each of these into °C to the nearest integral value using the relation and complete the table,
`C = 5/9 (F - 32)`
| Gas | Freezing Point at Sea Level (°F) |
Freezing Point at Sea Level (°C) |
| Hydrogen | –435 | |
| Krypton | –251 | |
| Oxygen | –369 | |
| Helium | –458 | |
| Argon | –309 |
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?
