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Question
A number ending in 9 will have the units place of its square as ______.
Options
3
9
1
6
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Solution
A number ending in 9 will have the units place of its square as 1.
Explanation:
We know that, if a number is ending in 1 or 9 in the unit’s place, then its square ends in 1.
The number ending in 9, will have the unit's place of its square as 1. ...[∵ 9 × 9 = 81]
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