Q63.The sum of all the 4-digit distinct numbers that can be formed with the digits 1, 2, 2 and 3 is: (1) 26664 (2) 122664 (3) 122234 (4) 22264
What This Question Tests
This question involves calculating the sum of all distinct 4-digit numbers formed using a given set of digits, including repeated digits, which requires careful application of permutation principles.
Concepts Tested
Formulas Used
Sum of numbers = (Sum of digits) * (n-1)! / (p!q!...) * (111...1)
๐ NCERT Sections This Tests
5.23 โ Give The Oxidation State, D Orbital Occupation And Coordination Number Of
Chemistry Class 11 ยท Chapter 5
5.23 Give the oxidation state, d orbital occupation and coordination number of the central metal ion in the following complexes: (i) K3[Co(C2O4)3] (iii) (NH4)2[CoF4] (ii) cis-[CrCl2(en)2]Cl (iv) [Mn(H2O)6]SO4
5.12 โ Write All The Geometrical Isomers Of [Pt(Nh3)(Br)(Cl)(Py)] And How Many Of
Chemistry Class 11 ยท Chapter 5
5.12 Write all the geometrical isomers of [Pt(NH3)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?
5.11 โ Draw All The Isomers (Geometrical And Optical) Of:
Chemistry Class 11 ยท Chapter 5
5.11 Draw all the isomers (geometrical and optical) of: (i) [CoCl2(en)2] + (ii) [Co(NH3)Cl(en)2] 2+ (iii) [Co(NH3)2Cl2(en)]+
๐ Question Details
- Chapter
- Permutation & Combination
- Topic
- Sum of numbers formed by given digits
- Year
- 2021
- Shift
- 18 Mar Shift 1
- Q Number
- Q63
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutation and Combination
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