Question

3-4=7
6-5=5
5-8=5
7-1=4

10-1=a
9-2=b
11-5=c
13-8=d

abcd=?

Answer 1

Answer:

10-1=a

9-2=b

11-5=c

13-8=d

Hope this will help you

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Answer 2

Answer:

abcd=9*7*6*5

1890 is the correct answer

please mark me as brainlist