IPMAT/Modern Math•11mos
oceancaver

Little help on permutations and combinations

Help on 7and 8

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Comments (6)

P
paneer_pakoda
IIM Rohtak
•11mos
Correct

Question 8

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P
paneer_pakoda
IIM Rohtak
•11mos

Question 7

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W
whatdym
•11mos

I have also enrolled in TIME. The qs in p&c are tough in the workbook.How many were you able to solve?

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B
basicallybhavesh
IIM Ranchi (IR 2)
MOD•11mos

How to ask good doubts?

Point out the exact step you're stuck on and let us know what you've already tried. This helps others understand your thinking and guide you better.

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O
oceancaver
OP•11mos

I didn't understand the question and where do I start

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B
basicallybhavesh
IIM Ranchi (IR 2)
MOD•11mos

For question 8, we need it to be 999<n≤5000999 < n \leq 5000 such that we can use first six whole numbers (0, 1, 2, 3, 4, 5). Can you try using the principle of counting and tell us the choices for each of the digits (ones, tens, hundreds, thousands)? Pro-tip: Count 5000 alag se.

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