The answer is 623. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.
It is: 47+52+63+66 = 228/4 => 57 which is the average mean
96
26
66 times 6 equals 396.
66 plus 66 equals 132
144
144
If I am correct, 9 plus 7 equals 112.
144, you add the plus numbers, then multiply it by the first.
144, you add the plus numbers, then multiply it by the first.
This or a similar question has already been answered. 2_plus_3_equals_10_7_plus_2_equals_63_6_plus_5_equals_66_8_plus_4_equals_96_then_9_plus_7_equals_what144.
144 add the two numbers and multiply by the first 2(2 + 3) = 10 7(7 + 2) = 63 etc.