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The total number of terms in the expansion of (a³ -3a²b + 3ab² – b³)⁵⁰ is:
Choice (a) is correct. We have, (a³ -3a²b + 3ab² - b³)⁵⁰ = {(a - b)³}⁵⁰ = (a - b)¹⁵⁰ We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1). Total number of terms in the expansion of (a - b)¹⁵⁰ is (150 + 1) = 151. Total number of terms in the expansion of (a³ - 3a²b + 3ab² -Read more
Choice (a) is correct.
We have, (a³ -3a²b + 3ab² – b³)⁵⁰ = {(a – b)³}⁵⁰ = (a – b)¹⁵⁰
We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1).
Total number of terms in the expansion of (a – b)¹⁵⁰ is (150 + 1) = 151.
Total number of terms in the expansion of (a³ – 3a²b + 3ab² – b³)⁵⁰ is 151.
This question related to Chapter 7 maths Class 11th NCERT. From the Chapter 7: Binomial Theorem. Give answer according to your understanding.
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The total number of terms in the expansion of (x + a)⁵⁰¹ + (x – a)⁵⁰¹ is :
Choice (c) is correct We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1). Total number of terms in the expansion of (x + a)⁵⁰¹ is (501 + 1) = 502. Total number of terms in the expansion of (x + a)⁵⁰¹ + (x - a)⁵⁰¹ is 251 terms get cancelled. This question related to ChapteRead more
Choice (c) is correct
We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1).
Total number of terms in the expansion of (x + a)⁵⁰¹ is (501 + 1) = 502.
Total number of terms in the expansion of (x + a)⁵⁰¹ + (x – a)⁵⁰¹ is 251 terms get cancelled.
This question related to Chapter 7 maths Class 11th NCERT. From the Chapter 7: Binomial Theorem. Give answer according to your understanding.
For more please visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-7
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
(b) Element with mass number 27 is Al. It has the atomic number equal to 13. Number of protons in Al atom = 13. Number of electrons in Al atom = 13. Number of electrons in Al³+ = 13 - 3 = 10. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
(b) Element with mass number 27 is Al. It has the atomic number equal to 13.
Number of protons in Al atom = 13.
Number of electrons in Al atom = 13.
Number of electrons in Al³+ = 13 – 3 = 10.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
See lessThe total number of terms in the expansion of (a² + 2ab + b²)¹⁰¹ is :
Choice (b) is correct. We have, (a² + 2ab + b²)¹⁰¹ = {(a + b)² }¹⁰¹ = (a + b) ²⁰² We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1). Total number of terms in the expansion of (a + b) ²⁰² is (202 + 1) = 203. Total number of terms in the expansion of (a² + 2ab + b²) ¹⁰¹ iRead more
Choice (b) is correct.
We have, (a² + 2ab + b²)¹⁰¹ = {(a + b)² }¹⁰¹ = (a + b) ²⁰²
We know that the total number of terms in the expansion of (x + a)ⁿ is (n + 1).
Total number of terms in the expansion of (a + b) ²⁰² is (202 + 1) = 203.
Total number of terms in the expansion of (a² + 2ab + b²) ¹⁰¹ is 203.
This question related to Chapter 7 maths Class 11th NCERT. From the Chapter 7: Binomial Theorem. Give answer according to your understanding.
For more please visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-7
Elements with valency 1 are
(c) Elements with valency 1 are either metals or non-metals. For example, sodium has a valency + 1 and chlorine has a valency - 1. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
(c) Elements with valency 1 are either metals or non-metals. For example, sodium has a valency + 1 and chlorine has a valency – 1.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
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