Question

How we will evaluate

Answer 1

first we will add the same numbers like 4+4+4+5+5+5+6+6+6=45 and then it's triangle we will divide it 180:45 and the answer comes 4

Answer 2

= 4[6x5 -4x4] -5[5x5 - 6x4] +6[5x4 - 6x6]
= 4[30-16] -5[25-24] +6[20-36]
=4x14 -5x1 +6x(-16)
= 56 -5 -96
=56-101
-45