Question

for what value of n 2n*5n ends with 5

Answer 1

2n*5n=10n^2
10n2*5
50n2

Answer 2

Answer:

Step-by-step explanation:

If n=2,

2²×5²=100

100 doesn't end with 5.

∴ For natural no. n, 2ⁿ×5ⁿ doesn't end with digit 5.