Question

Can the number 6ⁿ‚ n being a natural number end with the digit 5. Give reasons.

Answer 1

Yes 6n can end with the digit 5.As 5 is a natural number so n can end with the digit 5.

Answer 2

Question:—

Can the number 6ⁿ‚ n being a natural number end with the digit 5. Give reasons.

Answer:—

No.

Because 6ⁿ=(2×3)ⁿ=2ⁿ×3ⁿ

So, the only primes in the factorisation of 6ⁿ are 2 and 3, and not 5.

Hence, it cannot end with the digit 5.