Question

Find the unit digit in the product(658×639×476×312)

Answer 1

just concentrate on the unit digits of all numbers
$8 \times 9 \times 6 \times 2 \\ 72 \times 12 \\ 2 \times 2 \\ = 4$
unit digit of this Multiplication is 4.

Answer 2

Answer:

The unit digit in the product of $658*639*476*312$ is $4$.

Concept:

• The digit in a number's place one is known as the units digit.
• It is the digit that comes last in the number.
• For instance, the units digit for $987453$ is $3$ and for $2589$ it is $9$.
• The value of a number $xyz$ is equal to $100 * x + 10 * y+ 1 * z$.
• As a result, there are $x$ hundreds, $y$ tens and $z$ ones.
• Since "unity" refers to a single number, $z$ is also known as the units digit.
• The unit digit in $1234567$, for instance, is $7$.
• To find the unit digit in the product $32*26$ . Lets pick out each number's unit digit, then multiply it, $(2*6=12)$. The unit digit is $2.$

Given:

$658*639*476*312$

To Find:

We need to find the unit digit in the product.

Solution:

Lets pick out each number's unit digit, then multiply it;

$8$ in $658$

$9$ in $639$

$6$ in $476$

$2$ in $312$

Product of unit digit $= 8 * 9*6*2 = 864$

Therefore, the unit digit in the product of $658*639*476*312$ is $4$.

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