Best posts made by CHETAN KUMAR RAWAT

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CHETAN KUMAR RAWAT

For 1st question:

Solution: for ordered triplets, we need to add 2 sums b/w 3 natural numbers. eg. there are 10 1's, we need to add 2 plus b/w them.

1_1_1_1_1_1_1_1_1_1

1 + 1_1_1_1_1 + 1_1_1_1 = 1+5+4=10

So there are 9 places and two add for 3 numbers additionally we need ordered triplets so 1,5,4 and 4,5,1 are different.

i.e 9C2 =36