Round off the followng numbers to three significant digit a. 15462, b. 14.745, c. 14.750 and d. `14.650xx10^12`.

Explanation

The third significant digit is 4. This digit is to be rounded. The digit next to it is 6 which is greater than 5. The thid digit should, therefoe, be increased by 1. The digits to be dropped should be replaced by zero because they appear to the left of the decimal. Thus, 15462 becomes 15500 on rounding to three significant digits.
b. The third significant digit in 14.745 is 7. The number next to it is less thant 5. So 14.745 becomes 14.7 on rounding to three significant digits. ltbr. c. 14.750 will become 14.8 becue the digit to be rounded is odd and te digit next to it is 5.
d. `14.650xx10^12` will become `14.6xx10^12` because the digit to be rounded is even and the digit next to it is 5.