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Q.

The product of $578 × 369$ by rounding off the first number downwards and the second number upwards is 200000. State whether the statement is true or false.

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a

True

b

False

answer is A.

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Detailed Solution

Rounding off upwards means that the number to be greater than or equal to 5 and then round it off accordingly, whereas rounding off downwards means that the number to be smaller than 5 and then round it off accordingly.
For 578;
Rounding off 578 to downwards, we get 500.
For 369;
Rounding off 369 upwards, we get 400.
Calculating the product of the two numbers;

500 × 400 = 200000

So, the given statement is true.
Hence, option 1 is correct.

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The product of 578×369 by rounding off the first number downwards and the second number upwards is 200000. State whether the statement is true or false.