Q71.The total number of 3βdigit numbers whose sum of digits is 10, is ..........
What This Question Tests
This question requires using the stars and bars method or casework to find the number of 3-digit integers whose digits sum to 10. Constraints on digits (0-9) need careful handling.
Concepts Tested
Formulas Used
C(n+k-1, k-1)
π NCERT Sections This Tests
1.1 β Define The Term Solution. How Many Types Of Solutions Are Formed? Write Briefly
Chemistry Class 11 Β· Chapter 1
1.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
1.3 β Define The Following Terms:
Chemistry Class 11 Β· Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
5.16 β Draw Figure To Show The Splitting Of D Orbitals In An Octahedral Crystal Field.
Chemistry Class 11 Β· Chapter 5
5.16 Draw figure to show the splitting of d orbitals in an octahedral crystal field.
π Question Details
- Chapter
- Permutation & Combination
- Topic
- Stars and Bars Method
- Year
- 2020
- Shift
- 03 Sep Shift 2
- Q Number
- Q71
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutations and Combinations
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