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The sum given by 1.2 x 10^48 + 1.2 x 10^41 is ___?
  1. 1.2 x 10^81
  2. 2.4 x 10^81
  3. 13.2 x 10^48
  4. None
Explanation

To simplify 1.2×1048+1.2×10411.2 times 10^{48} + 1.2 times 10^{41} factor out the common coefficient:


1.2 times (10^{48} + 10^{41})

Since 104810^{48} is much larger than 104110^{41}, 1048+1041≈104810^{48} + 10^{41} approx 10^{48}


Thus, the expression simplifies to:


1.2 times 10^{48}

The sum remains close to 1.2×10481.2 times 10^{48}not multiplied significantly.

Hence, the correct answer is "None."

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