find value of A and B 3AB+AB1=839
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this mental abitlity question
1-----there is mistake in your question b+1=9 then b is confirm 8
2----if b is 8 then then 8+a=3 then a is 5 then it become 13 and carry 1
3---3+5=8 but carry 1 is left so there fault in this question
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