Home › IBPS Clerk › Reasoning › series_coding_relations › Bacteria in a culture double every hour. Their c…
Bacteria in a culture double every hour. Their counts hour by hour form a:
AArithmetic progression
BConstant sequence
CFalling sequence
DGeometric progression
Answer & Solution
Correct answer: D. Geometric progression
1. Each count is twice the last.
2. A fixed multiplier means a constant ratio.
3. So the counts form a geometric progression.
_Source: NCERT Class 11 Mathematics, Chapter 8, Sequences and Series._
Related questions
Inserting two numbers between 3 and 81 so the sequence is a G.P. gives:Rs 500 deposited at 10 percent compounded annually grows each year by a constant ratio of:30 bacteria double every hour. After 2 hours there are:If A and G are the A.M. and G.M. of two positive numbers, which is never smaller?Between 1 and 256 the real values of r that work are:Inserting three numbers between 1 and 256 to form a G.P. gives r to the fourth equal to:The geometric mean of two positive numbers a and b is:Over ten generations, a person's ancestors sum to 2046, computed using the sum formula of