8 , 780 , 000 , 000 , 000 = _______. Options: A . &nbsp8.78×1012 B . &nbsp8.78×10−12 C . &nbsp87.8×1012 D . &nbsp87.8×10−11

Answer: Option A : A 8 , 780 , 000 , 000 , 000 = 878 × 10 10 = 8.78 × 10 2 × 10 10 = 8.78 × 10 12 = 87.8 × 10 − 1 × 10 12 = 87.8 × 10 11 (Using a m × a n = a m + n )

8,780,000,000,000= ______

Question

8, 780, 000, 000, 000 =

_______.

Options:

A . 8.78×1012

B . 8.78×10−12

C . 87.8×1012

D . 87.8×10−11

Answer: Option A
:
A

8, 780, 000, 000, 000 = 878 \times 10^{10}

= 8.78 \times 10^{2} \times 10^{10}

= 8.78 \times 10^{12}

= 87.8 \times 10^{- 1} \times 10^{12}

= 87.8 \times 10^{11}

(Using

a^{m} \times a^{n} = a^{m + n}

)

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