5#7=20 8#9=19 6#5=16 2#4=?
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Answer:
11 is the number............
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•Given :-
5#7=20 8#9=19 6#5=16
•To find:-
2#4=?
• Solution:-
According to the series
the format is
[ first number×(difference between two numbers) +10 + 0]
then
[first number×(difference between two numbers) +10 + 1 ]
so
5#7=20 = 5×(7-5)+10+0 = 20
8#9=19 = 8×(9-8)+10+1= 19
6#5=16 = 6×(6-5)+10+0 = 16
thus
2#4=2×(4-2)+10+1 = 15
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