Suppose you have $9.00 to spend.
Let's check whether you have enough money to purchase two wallets that are for $4.90 each.
In order to know this, first find the cost of two wallets.
Cost of two wallets = $4.90 × 2 = $9.80
Now, $9.80 > $9.00
So, you do not have enough money to buy two wallets that are for $4.90 each.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.