Ill casapp some 5 if they get this right and show work.

they forget the last step which is to take the square root of the sum

7) a = 4

b = 17

a² + b² = c²

4² + 17² = c

16 + 289 = c²

305 = c²

√305 = c

17.464249196572980 = C

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's

probability for j is 1/4

while

a is 1/6