How many subsets in 1234567?

Answer 1

The number of subsets of a set is 2^number_elements_in_the_set.

The set {1, 2, 3, 4, 5, 6, 7} has 7 elements, thus it has 2^7 = 128 possible subsets.

Answer 2

There are 2^7 = 128 susets.

Answer 3

Good

Answer 4

(1) 2 3 4 5 6 7 1,2 1,3 1,4 1,5 1,6 1,7 2,3 2,4 2,5 2,6 2,7 3,4 3,5 3,6 3,7 4,5 4,6 4,7 5,6 5,7 6,7 1,2,3 124,1,2,512,6,127 234 235 236 237 345 346 347 456 457 567 1234 1235 1236 1237 2345 2346 23457 3456 3457 1234567