TCS Company Numerical Ability Permutation and Combination

a number plate can be formed with two alphabets followed by two digits with no repetition. then how many possible combinations can we get?

Read Solution (Total 18)

TCS Other Question

There are 4 boxes colored red, yellow, green and blue. If 2 boxes are selected, how many combinations are there for at least one green box or one red box to be selected? Three containers A, B and C are having mixtures of milk and water in the ratio of 1:5, 3:5, 5:7 respectively. If the capacities of the containers are in the ratio 5:4:5, find the ratio of milk to water, if all the three containers are mixed together.
a. 53:115 b. 53:113
c. 54:115 d. 54:113