Example 1 Find Q in the addition.
Here,
Q + 3 ends with 1
We put different values of Q,
and check which ends with 1
∴ Q = 8
Checking
Putting Q = 8
Hence verified
∴ Q = 8
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Davneet Singh
Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.
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