Register

nptel

543 views
0 votes
0 votes
Q.1 In a country there are coins of denominations $2, $3, $5 and $7. How many different ways are there to pay exactly $10?

approach??
User Avatar

1 Answer

0 votes
0 votes
Go on with highest denomination combination.

7  + 3 = 10

Break 7 int (5 + 2)

5 + 2 + 3 =10

Break 5 into (3+2)

3+2+3+2=10

No further breaking possible

So total 3 combination.

Edit after Subhanshu's comment

2 + 2 + 2 + 2 + 2 = 10

and

5 + 5 = 10

So 5 combinations.
• edited by
User Avatar
Voting & Accepting an answer helps improve the community
← PreviousNext →
← Previous in categoryNext in category →

Related questions

0 votes
0 votes
1 answer
1
simi2426 asked Aug 9, 2022
837 views
NPTEL Assignment
In how many ways can the word ‘DOCUMENTATION’ be arranged so that all the consonants come together.
In how many ways can the word ‘DOCUMENTATION’ be arranged so that all the consonants come together.
User Avatar
1 votes
1 votes
1 answer
2
rsansiya111 asked Dec 7, 2021
363 views
NPTEL Assignment Question
The number of possible subsequences in a string of length n are: $n^{2}$ $2^{n}$ n! n(n-1)
The number of possible subsequences in a string of length n are:$n^{2}$$2^{n}$ n!n(n-1)
User Avatar
0 votes
0 votes
0 answers
3
BASANT KUMAR asked Oct 10, 2018
304 views
permutation and combination(self doubt NPTEL)
Q.1 if no three diagonal of a convex decagon meet at the same point inside the decagon into how many line segment are the diagonal divided by their intersection.
Q.1 if no three diagonal of a convex decagon meet at the same point inside the decagon into how many line segment are the diagonal divided by their intersection.
User Avatar
0 votes
0 votes
1 answer
4
Warrior asked Sep 3, 2017
3,457 views
NPTEL Question
Find the particular solution of the given Recurrence relation or Difference equation. ar - 5ar-1 + 6ar-2 = 2r + r
Find the particular solution of the given Recurrence relation or Difference equation.ar - 5ar-1 + 6ar-2 = 2r + r
User Avatar
Link Copied!