5
Assuming that repeated numbers are allowed, the number of possible combinations is given by 40 * 40 * 40 = 64000.If repeated numbers are not allowed, the number of possible combinations is given by 40 * 39 * 38 = 59280.
80
There are (42*41*40*39*38*37)/(6*5*4*3*2*1) = 5 245 786 combinations.
By making a number tree that could have as many as 1,000,000 combos.
There are 5245786 possible combinations and I am not stupid enough to try and list what they are!
There are 12,033,222,880 of them.
5
Assuming that the only permitted operation is addition, then there are 4 combinations.
Assuming that repeated numbers are allowed, the number of possible combinations is given by 40 * 40 * 40 = 64000.If repeated numbers are not allowed, the number of possible combinations is given by 40 * 39 * 38 = 59280.
80
There are (42*41*40*39*38*37)/(6*5*4*3*2*1) = 5 245 786 combinations.
(43*42*41*40*39)/(5*4*3*2*1) = 962598
By making a number tree that could have as many as 1,000,000 combos.
18. 18 x 3 = 54. However, since the question asks for even numbers, many other combinations would qualify (e.g. 40 + 8 + 6, 32 + 12 = 10).
There are 8 prime numbers between 10 and 40: 11 13 17 19 23 29 31 37.
Assuming each of the shirts is distinguishable from the others and similarly with the pants and a "combination" consists of one shirt and one pair of pants, the answer is 4*10 = 40 combinations.