wirte all possible values of digit a if 43 a is exactly divisble by 3
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→ '43' isn't divisible by '3'
=> By Euclid's Theorem,
If 3 | 43a, and 3 doesn't divide 43
=> 3 | a
=> a = { 0 , 3 , 6 , 9 }
• Hence, the four possible digit values for 'a' are :
a = { 0 , 3 , 6 , 9 }
__________________________________________________________
→ '43' isn't divisible by '3'
=> By Euclid's Theorem,
If 3 | 43a, and 3 doesn't divide 43
=> 3 | a
=> a = { 0 , 3 , 6 , 9 }
• Hence, the four possible digit values for 'a' are :
a = { 0 , 3 , 6 , 9 }
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