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Saturday, 31 October

Same idea in other shifts

Asked 10× in all
  1. 6 Apr 2023, Shift 2 · Q22The number of 4-letter words, with or without meaning, each consisting of 2 vowels and 2 consonants, which can be formed from the letters…MediumNumerical value
  2. 15 Apr 2023, Shift 1 · Q22A person forgets his 4-digit ATM pin code. But he remembers that in the code all the digits are different, the greatest digit is 7 and the…HardNumerical value
  3. 29 Jun 2022, Shift 1 · Q30Let b1b2b3b4b_1b_2b_3b_4 be a 4-element permutation with bi∈{1,2,3,……,100}b_i \in \{1, 2, 3, \ldots\ldots, 100\} for 1≤i≤41 \le i \le 4 and bi≠bjb_i \ne b_j for…MediumNumerical value
  4. 30 Jun 2022, Shift 1 · Q21The number of 6-digit numbers made by using the digits 1, 2, 3, 4, 5, 6, 7, without repetition and which are multiple of 15 is __________.MediumNumerical value
  5. 26 Aug 2021, Shift 1 · Q81The number of three-digit even numbers, formed by the digits 0, 1, 3, 4, 6, 7 if the repetition of digits is not allowed, is __________.EasyNumerical value
  6. 25 Feb 2021, Shift 1 · Q84The total number of numbers, lying between 100 and 1000 that can be formed with the digits 1, 2, 3, 4, 5, if the repetition of digits is…MediumNumerical value
  7. 25 Jul 2021, Shift 2 · Q63If nPr=nPr+1{}^nP_r={}^nP_{r+1} and nCr=nCr−1{}^nC_r={}^nC_{r-1}, then the value of r is equal to :EasySingle correct
  8. 9 Jan 2020, Shift 1 · Q56If the number of five digit numbers with distinct digits and 2 at the 10th10^{\mathrm{th}} place is 336 k, then k is equal to :MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.