How do you prove that -LSB- math -RSB- 4 ^ n +15 ^ n-1 -LSB- / math -RSB- is divisible by -LSB- math -RSB- 9 -LSB- / math -RSB- using induction ?
How do you prove that -LSB- math -RSB- 10 ^ -LCB- 2n-1 -RCB- +1 -LSB- / math -RSB- is divisible by -LSB- math -RSB- 11 -LSB- / math -RSB- using induction ?