Question

write 0.047883 correct to 2 significant figures

Answer 1

0.048

. . . . . . . . . . . . . . . . .

Answer 2

SOLUTION

TO DETERMINE

Write 0.047883 correct to 2 significant figures

CONCEPT TO BE IMPLEMENTED

Rule for rounding off a number :

Discard all digits to the right of the nth place , if the discarded number is less than half a unit in the nth place , leave the nth digit unchanged ; if the discarded number is greater than half a unit in the nth place , add 1 to the nth digit .

If the discarded digit is exactly half an unit in nth digit leaving the nth digit unaltered if it is an even number but increase it by 1 if it is an odd number

EVALUATION

Here the given number is 0.047883

We know that the figures that are used in representing a number are called significant figures

The leading zero are used to fix the position of the decimal point

The 3rd significant figures = 8

Now 8 > 5

Thus the number 0.047883 correct to 2 significant figures is 0.048

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