If we multiply all the digits of 78549542, what will be the last two digits of the resultant number?

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Solution

The correct option is C
00

The digits in this number are 7,8,5,4,9,5,4,2.
Let's take down three digits from the given number which are 5,4,5.
Now, if we multiply these 3 digits we get 100.
Since we know, any digit multiplied by 100 yields 0 at unit place and 0 as well on tenths place.
$∴$ the last two digits of the resultant number be 00.

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