Q61.The number of seven digit integers with sum of the digits equal to 10 and formed by using the digits 1, 2 and 3 only is: (1) 77 (2) 82 (3) 42 (4) 35
What This Question Tests
This question involves finding the number of seven-digit integers with a specific sum using only limited digits, which can be solved using generating functions or case analysis for sums.
Concepts Tested
Formulas Used
Coefficient of x^k in (1+x+x^2+x^3)^7
๐ NCERT Sections This Tests
1.3 โ Define The Following Terms:
Chemistry Class 11 ยท Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
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Chemistry Class 11 ยท Chapter 1
1.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
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Physics Class 11 ยท Chapter 6
6.11 Dynamics of rotational the motion of extended bodies. motion about a fixed axis A large class of problems with extended bodies can be
๐ Question Details
- Chapter
- Permutation & Combination
- Topic
- Combinations with repetition
- Year
- 2021
- Shift
- 26 Feb Shift 1
- Q Number
- Q61
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 7: Permutation & Combination
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