Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Permutations and Combinations question

2023 · 1 Feb · Shift 1 · Q22
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Permutations and Combinations
  5. /2023 · 1 Feb · Shift 1 · Q22

Permutations and Combinations question

2023 · 1 Feb · Shift 1 · Q22

JEE MainMathematicsPermutations and CombinationsMCQ+4 / −1
The value of 11!50!+13!48!+15!46!+….+149!2!+151!1!\frac{1}{1 ! 50 !}+\frac{1}{3 ! 48 !}+\frac{1}{5 ! 46 !}+\ldots .+\frac{1}{49 ! 2 !}+\frac{1}{51 ! 1 !}1!50!1​+3!48!1​+5!46!1​+….+49!2!1​+51!1!1​ is :
  1. A
    25150!\frac{2^{51}}{50 !}50!251​
  2. B
    25151!\frac{2^{51}}{51 !}51!251​
  3. C
    25050!\frac{2^{50}}{50 !}50!250​
  4. D
    25051!\frac{2^{50}}{51 !}51!250​
PreviousNext

More from Permutations and Combinations

  • The number of 3-digit numbers, that are divisible by either 2 or 3 but not divisible by 7, is ​.2023 · Numerical
  • The number of words, with or without meaning, that can be formed using all the letters of the word ASSASSINATION so that the vowels occur together, is ​.2023 · Numerical
  • Number of integral solutions to the equation x+y+z=21, where x≥1,y≥3,z≥4, is equal to ​.2023 · Numerical
  • The total number of six digit numbers, formed using the digits 4, 5, 9 only and divisible by 6, is ​.2023 · Numerical
  • The number of ways of giving 20 distinct oranges to 3 children such that each child gets at least one orange is ​.2023 · Numerical
  • All the letters of the word PUBLIC are written in all possible orders and these words are written as in a dictionary with serial numbers. Then the serial number of the word PUBLIC is :2023 · MCQ
  • The number of 4-letter words, with or without meaning, each consisting of 2 vowels and 2 consonants, which can be formed from the letters of the word UNIVERSE without repetition is ​.2023 · Numerical
  • The number of arrangements of the letters of the word "INDEPENDENCE" in which all the vowels always occur together is :2023 · MCQ