Advertisements
Advertisements
Question
The cells of a bacteria double in every 30 minutes. A scientist begins with a single cell. How many cells will be there after 24 hours?
Sum
Advertisements
Solution
The cell of a bacteria in every 30 min = 2 ...[∵ 1 + 1 = 2 in 30 min]
So, cell of a bacteria in 1 h = 22 ...[∵ 2 + 2 in 1 h]
Similarly, bacteria in 24 h = 224 × 224
= 224 + 24 ...[∵ am × an = am + n]
= 248
shaalaa.com
Is there an error in this question or solution?
Chapter 8: Exponents and Powers - Exercise [Page 260]
APPEARS IN
RELATED QUESTIONS
Find the value of `1/(3^(-2))`.
Express 4– 3 as a power with the base 2.
(–9)3 ÷ (–9)8 is equal to ______.
For a non-zero rational number z, (z–2)3 is equal to ______.
`10^-2 = 1/100`
(–6)0 = –1
Express as a power of a rational number with negative exponent.
`(((-3)/2)^-2)^-3`
`(125 xx x^-3)/(5^-3 xx 25 xx x^-6)`
Find x.
`(2/5)^(2x + 6) xx (2/5)^3 = (2/5)^(x + 2)`
If a = – 1, b = 2, then find the value of the following:
ab – ba
