8*5 - 7*2 = 40 - 14 = 26
I think there is 13 26p 1n 21p 2n 16p 3n 11p 4n 6p 5n 1p 1d 16p 2d 6p 1q 1p 1d 1n 11p 1d 2n 6p 1d 3n 1p 2d 1n 1p Had to come up with this for my son's 2nd grade class.
Here we will explain two ways of looking at this problem to solve it. How many times does 3 go into 26? is the same as asking How much is 26 divided by 3? ...
13/10 = 130/100 = 26/20
13X2
Since any two letters of the alphabet do not duplicate each other, then the number of arrangements of any two letters is the same as the number of permutations of 26 things taken 2 at a time. That is 26! / (26 - 2)!, or 26! / 24!, or (26) (25), or 650.
Remember in multiplication that A x B is the same as B x A? Well using this rule we can write that 13 x 2 = 26 and 2 x 13 = 26.
23,3 19,7 13,13
26 x 3 13 x 6
Assuming you are using the standard English alphabet, the number of combinations you can make are: 26 x 26 = 676 combinations.
26*25*24*23/(4*3*2*1) = 14950
3 and 23 are two prime numbers having a sum of 26.
=> or -> are good ways to make a right arrow symbol. Try pressing Alt-26 (on the keypad) gives →