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The number of seven digit integers with ...

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

A

55

B

66

C

77

D

88

Text Solution

Verified by Experts

The correct Answer is:
C
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ML KHANNA-PERMUTATIONS AND COMBINATIONS -SELF ASSESSMENT TEST
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  17. There are 10 points in a plane, out of these 6 are collinear. The numb...

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  18. IF x,y,r are positive integers then ""^x Cr+""^x C(r-1) . ""^ y C1+ ...

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