Advertisements
Advertisements
प्रश्न
If * is an operation have, such that for integers a and b. We have a * b = a × b + (a × a + b × b), then find (–6) * 2
उत्तर
Now, put a = –6 and b = 2
(–6) * 2 = (–6 × 2) + [(–6) × (–6) + 2 × 2]
= –6 × 2 + (36 + 4)
= –12 + 40
= 28
APPEARS IN
संबंधित प्रश्न
Find the product, using suitable properties:
15 × (− 25) × (− 4) × (− 10)
Find the product, using suitable properties:
(− 41) × 102
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 (– 23) × 48
Find (– 35) × (– 98).
(–157) × (–19) + 157 = ______.
A green grocer had a profit of ₹ 47 on Monday, a loss of ₹ 12 on Tuesday and loss of ₹ 8 on Wednesday. Find his net profit or loss in 3 days.
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?
If Δ is an operation such that for integers a and b we have a Δ b = a × b – 2 × a × b + b × b (–a) × b + b × b then find (–7) Δ (–1). Also show that (–7) Δ (–1) ≠ (–1) Δ (–7).
