Multiplication with Large Multipliers (With Carry)
How many seco...
Question
How many seconds are there in 365 days if there are 86,400 seconds in a day?
A
31,536,000 seconds
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B
31,356,000 seconds
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C
31,635,000 seconds
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Solution
The correct option is A31,536,000 seconds The number of seconds in a day =86,400
The number of seconds in 365 days =365×86,400 seconds
The product =365×86,400 can be evaluated as:
First, multiply the units digit 5 (in 365) with 86,400.
Now, multiply the tens digit 6 (in 365) with 86,400.
Now, multiply the hundreds digit 3 (in 365) with 86,400.
Finally, we add 432000, 5184000 and 25920000 to get the product.
365×86,400 seconds =31,536,000 seconds
Thus, the number of seconds in 365 days is 31,536,000 seconds.