Mathematics
Assertion: Product of three negative integers and a positive integer is negative.
Reason: (-1) x (-1) x (-1) x …………… n times = -1, if n is odd.
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
- Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
- Assertion (A) is true but Reason (R) is false.
- Assertion (A) is false but Reason (R) is true.
Answer
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Explanation
Product of three negative integers:
(negative x negative x negative) = (negative)
So, product of three negative integers is negative.
Multiplying this by a positive integer keeps it negative:
(negative result x positive) = (negative)
The reason correctly explains that an odd number of negative integers gives a negative result.
Hence, option 1 is the correct option.
Related Questions
State True or False :
The quotient of two integers with unlike signs is always negative.
Aditya went to Australia during the holidays of his children. They visited the coral reef and they were all excited to go for scuba diving. Aditya dived 36 feet to reach the brain coral as his instructor had directed him. He then rose by 19 feet to travel over a ridge.
(1) What is the depth of the ridge ?
- 57 feet
- 19 feet
- 17 feet
- 45 feet
(2) Aditya again dived 58 feet to reach the base of the reef. What is the depth of the reef ?
- 32 feet
- 41 feet
- 58 feet
- 75 feet
(3) In order to see an underwater cave, Aditya rose 26 feet. What is his location with respect to sea-level ?
- 49 feet
- 101 feet
- 26 feet
- 9 feet
(4) If a whale moving at a depth of 21 feet from the sea level passed over Aditya, what was its distance from Aditya ?
- 64 feet
- 49 feet
- 53 feet
- 28 feet
Tanvi had a keen interest to invest in share market. So, she took lessons from an investment coach. The coach told her to watch the fluctuations in the value of share over a period of time. She found that on April 1, the price of a share of XYZ company was ₹2552.
(1) On April 2, the price of this share changed by gaining ₹37. What was the price of each share of XYZ on April 2 ?
- ₹2515
- ₹2589
- ₹2562
- ₹2573
(2) On April 3, the price changed by losing ₹16 by 12 pm and then again losing ₹8 by the end of the day. What was the price of each share of XYZ by the end of the day on April 3 ?
- ₹2528
- ₹2565
- ₹2576
- ₹2603
(3) On April 4, the price of XYZ company's share changed by gaining ₹11 by 12 pm and then again gaining ₹14 by the end of the day. What was the price of each share of XYZ by the end of the day on April 4?
- ₹2540
- ₹2564
- ₹2590
- ₹2614
(4) On April 5, the price of the share changed by losing ₹13 by 12 pm and then gaining ₹4 by the end of the day. What was the price of each share of XYZ by the end of the day on April 5 ?
- ₹2599
- ₹2607
- ₹2612
- ₹2581
Assertion: Difference of two negative integers cannot be a positive integer.
Reason: For any two integers a and b, a - b = a + (additive inverse of b)
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
- Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
- Assertion (A) is true but Reason (R) is false.
- Assertion (A) is false but Reason (R) is true.