self Maths Puzzle

(856+157)^2+(856-167)^2/856856+167167 = ?

Read Solution (Total 1)

(856+157)^2+(856-157)^2/856*856+167*167
=2(856*856+167*167)/(856*856+167*167)
=2
11 years agoHelpfull: Yes(1) No(0)

self Other Question

if there are 4 boxes - 3 of them can be filled with 50 coins at max while 1 of them can be filled with 100 coins at max then how many ways are there to distribute 150 coins to these boxes ? Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?