The constant term in the expression is 7
3/4 bc 1 1/4 divided by 20 is 1/16. 1/16 times 12 is 3/4
See, to make a 5-letter word , 5 places are to be filled ___ ___ ___ ___ ___ 1st 2nd 3rd 4th 5th the first place can be filled in 5 ways (s,p,e,l,l) 2nd place in 4 ways. 3rd place in 3 ways. 4th place in 2 ways. 5th place in 1 way. now , ther are 2L's. hence total no. of words that can be formed=(5*4*3*2*1) / 2*1
Rotation of 180° about the origin
First: 5
Second: 8
Third: 14
Hope this helps! :)
~Zain