TCS Company Numerical Ability Permutation and Combination

what are the number of solutions for x+y+z=12, if x,y & z can take values from 1 to 7 ?

Read Solution (Total 12)

TCS Other Question

Find the no. of all 6-digit natural no.s such that the sum of their digits is 10 and each of the digits 0, 1, 2, 3 occurs at least once in them.
1.490
2.386
3.520
4.620
Find the number of times "3" occur between 2999 and 4000?