Q21.What is the number of permutations of the letters of the word 'BANANA'?
Math Chapter Wise subcategory
Permutation And Combination questions
EnglishOAVS TGT 2018
Correct answer: 60
EnglishOAVS TGT 2018
Correct answer: 43
EnglishOAVS TGT 2018
Q23.Find the value of n such that n n 5 3 P =42 P n> 4
Correct answer: 10
EnglishOAVS TGT 2018
Correct answer: 3! 8! 5! 4!
EnglishKVS TGT 2017
Q25.If n C12 = n C8, then n is equal to–
Correct answer: 20
EnglishUP TGT 2021
Correct answer: 120
EnglishUPPSC Ashram Paddhati 2021 UP PGT 2011, 2013
Q27.If n Pr = 720. n Cr, then the value of r is
Correct answer: 6
EnglishUKPSC Lecturer (Mains) 2020
Correct answer: 138
EnglishUKPSC Lecturer (Mains) 2020 UP TGT 2000, 2001, 2005
Q29.A polygon has 44 diagonals, then the number of its sides are:
Correct answer: 11
EnglishUKPSC Lecturer (Mains) 2020
Correct answer: 60
EnglishUKPSC Lecturer (Mains) 2020
Correct answer: 3960
EnglishUKPSC Lecturer (Mains) 2020
Q32.How many numbers can be formed taking only 3 digits together out of the digits: 1, 2, 3, 4, 5 and 6?
Correct answer: 120
EnglishHaryana PGT 2019
Correct answer: 192
EnglishHaryana PGT 2019
Correct answer: 58th
EnglishHaryana TGT 2020
Q35.The number of diagonals of a polygon having 12 sides is:
Correct answer: 54
EnglishUK SSSC LT 2020
Q36.Total number of chords joining 21 points on the circle will be:
Correct answer: 210
EnglishHaryana PGT 2020
Correct answer: 3(m+1/C4)
EnglishHaryana PGT 2018
Correct answer: 10
EnglishHaryana PGT 2018
Correct answer: Formula option C (see source)
EnglishUKPSC GIC 2018
Correct answer: 2(18!)
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