Write five numbers which you cannot decide whether they are square just by looking at the unit’s digit.

To do:

We have to write five numbers for which we cannot decide whether they are squares just by looking at the unit’s digit.

Solution:

We know that,

A perfect square can only end with the digits 1, 4, 5, 6, 9 and 0.

Therefore,

Five numbers for which we cannot decide whether they are squares just by looking at the unit’s digit are 2026, 2024, 2025, 2021, 2029.

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Updated on: 10-Oct-2022

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