Question

23+27+24+24+24+24+24+24+42+42+42+24+24+24+24+24+42+24+42+42+24+24

Answer 1

Number of 24's=14
Number of 23=1
number of 27's=1
number of 42=6
Hence the sum=(14*24)+23+27+(6*42)
                         =336+23+27+252
                       =638
Hope the answer helped ...coment if doubt persists..!! :)

Answer 2

23=1
27=1
24=14
42=6

23+27+336+252=638

answer is 638