UPSEE Solved Model Paper 7

To determine the order of magnitude of a number N , we express it as
N = n × 10x
If 0 .5 < n ≤ 5 , then x will be the order of magnitude of N.
The given value 9.82 x 1018 can be expressed as 0 .982 x 1019
As, 0 5 < 0.982 < 5. the order of magnitude is 19.
Hence, option 'C' is correct