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  1. (d) Lysosomes bud off as vesicles from Golgi apparatus. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/

    (d) Lysosomes bud off as vesicles from Golgi apparatus.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/

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    • 11
  2. Choice (b) is correct. 3 different rings to be worn in four fingers with at most one in each finger in P(4, 3) ways = 4!/(4 - 3)! = 4!/1! = 4 × 3 × 2 × 1/1 = 24 This question related to Chapter 5 maths Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to yourRead more

    Choice (b) is correct.
    3 different rings to be worn in four fingers with at most one in each finger in P(4, 3) ways = 4!/(4 – 3)! = 4!/1! = 4 × 3 × 2 × 1/1 = 24
    This question related to Chapter 5 maths Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-6

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    • 6
  3. Choice (c) is correct.  Given ¹⁵ C₃ᵣ  = ¹⁵ Cᵣ ₊ ₇ ⇒ 3r = r + 7 or 3r + ( r + 7) = 15 ⇒ 2r = 7 or 4r = 8 ⇒ r = 7/2 or r = 2 ⇒ r = 2 This question related to Chapter 6 maths Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to your understanding. For more pleasRead more

    Choice (c) is correct. 
    Given ¹⁵ C₃ᵣ  = ¹⁵ Cᵣ ₊ ₇
    ⇒ 3r = r + 7 or 3r + ( r + 7) = 15
    ⇒ 2r = 7 or 4r = 8
    ⇒ r = 7/2 or r = 2
    ⇒ r = 2
    This question related to Chapter 6 maths Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-6

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    • 16
  4. Choice (d) is correct.  Given, ⁿ ⁺ ¹C₃ = 3.ⁿ C₂ (n + 1)!/(n + 1 - 3)! × 3! = (3)× (n)!/ (n - 2)! × 2! ⇒ (n + 1) × (n)!/(n - 2)! ×3 ×2! = 3 × (n)!/(n-2)! × 2! ⇒ n + 1/3 = 3 ⇒ n + 1 = 9 ⇒ n = 8 Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to your understanRead more

    Choice (d) is correct. 
    Given, ⁿ ⁺ ¹C₃ = 3.ⁿ C₂
    (n + 1)!/(n + 1 – 3)! × 3! = (3)× (n)!/ (n – 2)! × 2! ⇒ (n + 1) × (n)!/(n – 2)! ×3 ×2! = 3 × (n)!/(n-2)! × 2!
    ⇒ n + 1/3 = 3 ⇒ n + 1 = 9 ⇒ n = 8
    Class 11th NCERT. From the Chapter 6: Permutations and Combinations. Give answer according to your understanding.

    For more please visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-11/maths/#chapter-6

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    • 6