number of four different digits are formed by using the digits 1, 2, 3, 4, 5, 6, 7 in all possible ways without repetition.

The number of diagonals of a hexagon is

Question

number of four different digits are formed by using the digits 1, 2, 3, 4, 5, 6, 7 in all possible ways without repetition.

The number of diagonals of a hexagon is

anonymous · Answer

2nd question: From a 4 × 4 square grid, 2 squares are selected at random, what is the probability that both the squares have the same dimensions?

phi · Answer

for the first question, there are  7 choices for the first digit, 6 for the second, etc
multiply the choices:7*6*5*4

anonymous · Answer

840

phi · Answer

yes

anonymous · Answer

the no of diagonals of hexagon related to 840
?

anonymous · Answer

k wrong question i think so.i need answer for second question