Question

Question 4(f)
Express the number appearing in the following statements in standard form:
(f) The universe is estimated to be about 12,000,000,000 year sold.

Answer 1

(f) Years of Universe = 12,000,000,000years
$=12\times 1000,000,000years$
$=1.2\times 10\times 1000,000,000years$
$=1.2\times {10}^{10}years$