Question

3 power n × 4 power m cannot end with the digit '0' . Justify?​

Answer 1

Answer:

let us take n:(-1) m:(1)

(-1)³*(1)⁴=

-1*1

= -1

Step-by-step explanation:

hence we conclude that it doesn't end with zero

Answer 2

Answer:

${3}^{n} = 2x \: + \: 1 \: \\ because \: {3}^{n} \: is \: always \: odd \: . \\ similarily \: \\ {4}^{m} \: = 2y \\ as \: {4}^{m} \: is \: always \: even \: \\ hence \: \\ {3}^{n} \: \times {4}^{m} can \: never \: be \: a \:multiple \: of \: 5 \: and \: 2 \: at \: same \: time \: \\ hence \: it \: can \: never \: end \: wth \: digit \: zero$