Find the last two digits of 22156789.
My try:
As 2156789=4∗539197+1
The unit digit of 22156789 is similar to the unit digit of 24n+1 which is equal to 2.
But I'm unable to find the tens digit. Please help me.
I have injection f:A→B and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...
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